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Depravity Falls	By : GeorgeGlass Category: +G through L > Gravity Falls Views: 15956 -:- Recommendations : 4 -:- Currently Reading : 5
Disclaimer: I do not own Gravity Falls or its characters. I made no money from writing this story.

Chapter List
- 5
- 6
- 7
Chapter 6: Three is a Magic Number
“So,” Dee asked Mabel as they sat in the sunny clearing, “how did things go with Candy and Grenda?”
“It was totally amazing!” Mabel shouted. “I had no idea that sex with other girls could be that great!”
“That’s the value of a vagenda,” Dee said. “There are many delightful experiences in this world that would pass you right by if you never thought to try them.”
“Yeah, I guess you’re right. Thanks, Dee!”
“Think nothing of it. This is part of my job as your spirit guide, after all.”
“It’s so hugely lucky that I found you in that cave,” Mabel said. “And I only found the cave because I heard that weird bird call, or whatever it was. I guess it was the call of…destiny,” she finished, doing jazz hands.
“Indeed,” Dee replied. “So, now that you’ve dipped your toes into the pond of Sapphic pleasure, are you ready to move on to the other thing we talked about?”
“The triplex with Dipper and Wendy? Yeah!”
“It’s called a threesome, but the phrase ‘triple X’ should certainly apply,” Dee said with a chuckle.
Mabel wasn’t sure what that meant but pressed forward anyway. “So, how do we do it?”
“Well, I’m sure Dipper will be very excited to participate, so you needn’t worry about him. Although you will need him to participate in seducing Wendy; generally speaking, it’s far easier to propose a threesome when all three of you being involved from the beginning.”
“Yeah, and Dipper could probably use a fun distraction,” Mabel said, knowing that Dipper was at the Shack trying to decipher the strange coded something-or-other they’d found beneath the abandoned log cabin—and not having much luck. “But what about Wendy? Should I use the chocolate again?”
“Actually, no,” Dee replied. “I think it’s time we took off the training wheels, and you began to rely on your own powers of seduction.”
“What do you mean, my own powers?”
“As I told you at the beginning, Mabel, I’m not the only one who becomes more powerful with each taboo you break. You’ve been gaining power, too. Can’t you feel it?”
“Well, I mean, I feel more confident and everything, but I don’t know about powerful.”
Dee sighed. “I suppose this is my fault. I should have let you seduce Candy and Grenda on your own and just keep the chocolate on hand as a backup.”
“On my own? How?”
“Mabel, ever since our work together began, your powers of seduction have been growing steadily. You didn’t make Dipper your enthusiastic incestuous sex partner simply by giving him a few pieces of chocolate. All the chocolate did was help you get one foot in the door; everything after that was you. You are sexy, Mabel—not just in your appearance, but in your attitude, your adventurousness, and your sense of fun. These are qualities you’ve had all along, but now you’ve brought them together and forged them into something wonderful and strong. Something you will have for your whole life, and that can never be taken away from you.”
“Wow,” Mabel breathed. “I guess I never realized that.”
“Well, it’s high time you did. So don’t worry about seducing Wendy. I’m confident that you can.”
“Wow,” Mabel repeated as she looked off into the trees. “Cool…”
Then Mabel turned back to Dee. “But…there’s something else.”
“What?”
“Well, I’m a little worried about how this thing with me and Dipper is going to work.”
“Mabel, I’ve told you, you don’t have to worry about taboos against incest, or anything else you and Dipper do together. By the time we’re finished, you’ll be able to change society’s rules any way you like.”
“I don’t mean that,” Mabel said. “It’s just that me and Dipper are so different. We’re hardly interested in any of the same things anymore. I can’t see us building a life together just based on our shared love of syrup races and Duck-tective.”
“You and Dipper are more compatible than you think,” Dee replied. “The two of you might be interested in different things, but the way you approach them is very much the same. You’re both passionate. You both can become single-minded to the point of obsession—sometimes to your benefit, sometimes to your detriment. But the fact that you obsess over different things means that each of you is there to talk the other one down off the ledge when they need it. Your differences aren’t a weakness; they’re a strength. They are why the two of you are good for each other.”
“Wow,” Mabel said. “I, I never thought of it like that.”
“Part of my job as your spirit guide is to give you perspective. Especially on important things like this.”
“Thanks, Dee.”
***
That night, Mabel and Dipper lay holding hands after an intense but exhausting round of sex. Mabel loved that this was how every day ended now.
“So Dipper,” she asked, still panting a little. “Tell me your biggest fantasy. Like, from before we started fucking.” Mabel also loved hearing herself say fucking.
“Murdering Dippy Fresh in a hundred different ways,” Dipper replied flatly.
“Wow, okay,” Mabel replied as her eyes widened. “We’ll talk about your serious emotional issues later. I meant your biggest fantasy about sex.”
“Oh. Yeah. Right,” Dipper replied awkwardly. Then, for a moment, he fell quiet as they both gazed up at the rafters.
“Mabel,” Dipper finally said, “can I admit something to you? Something kind of…messed up?”
“If it’s more messed up than doing your twin sister up the butt,” Mabel replied with a grin, “then I really wanna know what it is.”
“So,” Dipper began slowly, “remember when we first got here, when you were talking about the time we met five-year-old Wendy in the past, and how uncomfortable it made me when she said I was cute?”
“Yeah,” Mabel replied, uncertain where Dipper was going with this.
“Well, it did make me pretty uncomfortable at the time.” He took a breath and said, “But later…N- No, I can’t. It’s insane.”
“C’mon, bro, you can tell me anything,” Mabel pleaded. “I’m not gonna judge. I mean, not a lot.”
Dipper took a deep breath. “It’s just that…when I thought about it later, I realized that if I could go back in time again, and be with a version of Wendy who was actually into me instead of one who wasn’t, then…I would. Even…” He took another deep breath. “Even if she was only five years old.”
Mabel was intrigued to say the least. Among other things, she wondered if it would be fun to roleplay being five-year-old Wendy “innocently” seducing a much older Dipper. But first, Mabel wanted to hear more about Dipper’s fantasy regarding super-young Wendy.
“Wow,” Mabel said. “So, like, would you kiss her and stuff?”
“Yeah,” Dipper confessed.
Mabel looked at him side-eye. “Would you do more than kiss her?”
There was a brief moment of silence. Then Dipper said, “Yeah.”
Mabel gasped with excitement. Then, her voice low, she asked, “Would you fuck her?”
“I…I might. No, I would. I definitely would. If it were, you know, physically possible—to get in there, I mean.” He sounded even more sheepish as he added, “Of course, in my fantasy, it always is.”
Mabel felt a strange kind of excitement at the mental image of Dipper fucking a cute, five-year-old Wendy, with her red hair in pigtails and a flat chest and rosy little nipples and a cute little hairless pussy that could just barely take Dipper’s teenage cock. What was more, it gave Mabel ideas of her own: She’d had plenty of thoughts about getting it on with older guys, but the idea of doing it with a younger one seemed deliciously perverted.
Fascinated though she was by Dipper’s confession, she forced her mind back to the task at hand. Right now, Mabel thought, I’ve got bigger fish to fry. Specifically a Great Northwestern Redheaded Flannel-fish. And I’m going to need Dipper’s help to get her into the net. And by net, I mean bed. And by fish, I mean Wendy. And by Dipper’s help, I mean…okay, that part’s literal.
“Well,” Mabel said, “I might not be able to get you in bed with five-year-old Wendy, but…How would you feel about both of us getting in bed with regular teenage Wendy?”
Dipper blinked, and Mabel could see behind his eyes the war that was suddenly raging between skepticism and blind hope.
“What are you talking about?” he asked.
“I’m talking about a triple-decker—no, wait, a threesome—starring you, me, and the teenage redhead of your dreams.”
Dipper looked at her and blinked, then blinked again, as though he weren’t sure he believed his eyes or his ears.
“Are- Are you messing with me?” he asked. “How could you make that happen? And why would you make it happen?”
“First, no, I’m not messing with you. And third, I’d make it happen because I know it would make you happy.”
“Wait, you skipped from first to third.”
“‘Cause your second question is the easiest one. You already know I’ve got great powers of seduction.”
“Um, do I know that?”
“If someone had asked you a month ago whether you’d ever consider having sex with me, what would you have said?”
Dipper sighed. “I’d have said no,” he admitted. “And then I’d have thrown up in my mouth a little.”
“Exactly.”
“Okay, that proves you can seduce me, but it doesn’t prove you can seduce Wendy. Remember what you said our first night here, about how I could never date Wendy because of the whole age thing?”
“I’m not talking about dating her,” Mabel replied. “I’m talking about secret sex shenanigans. Totally different thing.”
“Maybe so,” Dipper said, “but I’m still not convinced you can get Wendy to do it.”
Mabel considered this for a moment, then said, “Tell you what: At work tomorrow, I’ll prove it to you.”
***
The next morning, Dipper and Mabel were in the storeroom, alternately putting items on the cart to restock the shelves and kissing and fondling each other. Then they heard the jangling of the bells on the gift shop door, indicating that someone had just come in. Mabel peeked through the barely open door of the supply room; then she smiled and turned to Dipper.
“All right, Bro-Bro, time to prove that I’ve got the skills to…Well, I was going to say ‘pay the bills,’ but that kinda makes me sound like a prostitute.”
“Right. And we definitely don’t know any prostitutes,” Dipper said hastily.
Mabel thought that was an odd thing to say, but she couldn’t let it distract her from the mission. Through the crack in the door, she was looking carefully at a trio of girls who appeared to be in their upper teens. They were browsing the gift shop, chiefly to mock the various items for sale. Mabel could tell that they were the rebellious type from their black eyeliner and their choice of clothing, which seem to favor used leather and Army surplus. One of the girls, who had a safety pin for an earring and wore glossy-white knee-high combat boots, had drifted away from the other two while browsing.
“Okay, watch this,” Mabel murmured to Dipper.
Mabel left the storeroom and approached the girl, acting a lot more confident than she felt. Because really, Mabel only had Dee’s word for it that she could actually do this kind of thing. Dee’s word, and maybe a tiny inkling inside herself.
C’mon Mabel, you’ve got this, she thought. Dee says you’re sexy, so just let all that sexiness ooze out of you. Ooze in a sexy way.
Her voice subtly sultry, Mabel said, “Hi. I like your boots.”
The girl brushed a lock of purple-dyed hair away from her eyes. Her cheeks went slightly pink as she looked down at Mabel’s face.
“Um, thanks,” the girl replied. Then, with a sheepish chuckle, she added, “I like your rainbow earrings.”
Mabel’s voice was pure honey as she replied, “Thank you so much.”
Then, looking the girl right in her black-lined eyes, Mabel added, “I work here, so if there’s anything you need…anything at all…just ask.”
The teenager’s cheeks went from pink to red, and Mabel could practically feel the girl’s body heat rising. Especially in the crotch area, which was close to Mabel’s stomach because of the difference in their heights.
“I- O- Okay,” the girl stammered, her voice a little breathy.
Mabel gave her a wink and went back into the stockroom. The moment the door closed, Dipper looked at her with amazement.
“How the heck did you do that?” he asked. “She was practically creaming her acid-washed jeans right there in the gift shop!”
“Her whole outfit was obviously built around those boots,” Mabel replied, “so that was my way in. After that, I just had to be…charming.”
“You are blowing my mind right now,” Dipper said. “I mean, I’ve seen you flirt with people and totally crash and burn. And I mean crash hard. It’s like watching the plane hit the ground and then the flaming wreckage goes over the edge of a cliff and-”
“Can we get back to the part where you’re impressed with me?”
“Yes, right, sorry. I’m very impressed. You have really upped your flirtation game.”
“So, now do you think I can seduce Wendy?”
“Short answer: Heck yes.”
“Sweet,” Mabel replied. Remembering Dee’s advice, she went on, “But I’m gonna need your help. I can’t get Wendy to want to sleep with me and you if you’re not, you know, participating in the seducing.”
“Okay, I get that,” Dipper replied, and Mabel could see anxiety forming like a cloud in front of the sun of his excitement. “But I can’t…do whatever it is you do.”
“Actually,” Mabel replied, “I’m pretty sure you’ve got at least a little of what I’ve got.”
This was another thing that Mabel didn’t know for sure but had an inkling about. Just as she had grown more confident and, clearly, more seductive under Dee’s tutelage, Mabel had noticed that Dipper seemed a little more confident these days, too. Maybe there was some kind of trickle-down effect, from Dee to Mabel to Dipper.
“I mean,” Mabel continued, “I saw the way you were talking to Pacifica when we saw her at the diner. She was definitely throwing up what you were throwing down, or however that expression goes.”
“Yeah,” Dipper replied, looking at his shoe, “I’m not sure Pacifica is the best test subject for that.”
Mabel wasn’t sure what Dipper meant by that, but she forged ahead nonetheless.
“Well, don’t worry,” Mabel said. “I’ll take the lead with Wendy. You just need to be there and agree with me when I tell her how hot she looks today.”
“Today?” Dipper replied, his voice cracking a bit.
“There’s never gonna be a better time,” Mabel replied. “Soos told me he’s taking Grandma Soos and Melody to dinner and a movie tonight, so we’ll have the house to ourselves.”
“Wow,” Dipper replied, rubbing his hands together in nervous excitement. “I can’t believe we’re gonna do this.”
“You’d better believe it, Bro-Bro. As soon as it’s closing time, the cobra of love is gonna strike.”
“Um, say what now?”
***
It was hard for Mabel to bottle up her feelings and act normal for the rest of the work day. She was excited, of course, to experience the novelty of having sex with both Dipper and the sixteen-year-old tower of red-haired hotness that was Wendy. But Mabel was also a little nervous. Yes, she’d impressed Dipper by eliciting a strong erotic reaction from a girl who was probably even older than Wendy, but that situation had minimal stakes: The girl was a total stranger who was probably just passing through and whom Mabel was therefore unlikely ever to see again. Wendy, on the other hand, was a friend and coworker, whom Mabel would be seeing again almost every day for the rest of the summer. If anything went wrong, it would make for a very awkward forty hours a week. There was also the fact that Wendy was about the coolest, most unflappable person Mabel had ever met. What if she turned out to be immune to Mabel’s charms? Why hadn’t Mabel begged Dee to give her some chocolate, just in case?
Mabel knew that these were not good thoughts to be having, because the more nervous she made herself, the more likely she was to screw up when the time came. So as she passed by the foot of the stairs on her way to grab some more stuffed Sascrotches from the stockroom, she stopped, put her hand on the banister, took a deep breath, and centered herself.
Dee has never given me bad advice, she thought. She wouldn’t have told me to do this on my own if she wasn’t sure I could.
As her confidence pulled out of its downward spiral, Mabel thought, Besides, I haven’t flunked a single item on my vagenda. Why would I start failing now? Maybe the old Mabel wouldn’t have been able to handle this, but the new Mabel has sexiness, confidence, and the best knitted underwear in town. I can’t lose!
With this in mind, when quitting time came, Mabel took Dipper’s hand and walked him over to the gift shop counter. Wendy looked up from the register, which she had just locked for the night, and Mabel gave her a little smile.
“Hey, Wendy,” Mabel said. “Your hair looks extra-shiny today. Did you do something different with it, or is it just how the sunlight is catching it right now? Because it looks like fire.”
Wendy blinked. Her normally pale, freckled cheeks turned a light pink.
“Oh, um,” Wendy replied, “I, uh, tried this new conditioner last night. I mean, it’s not normally my thing, but Tambry lent it to me, and I was just messing around.”
“You should definitely keep using it,” Mabel interrupted. “You look gorgeous.”
“You really do,” Dipper added.
As with the white-booted girl from the gift shop, Wendy’s cheeks went from pink to red. “Wow. I, um, I…Thanks.”
In a tone that was somehow both innocent and very not-innocent, Mabel said, “Hey, you want to come hang out with us for a while?”
This was the moment of truth, Mabel thought. The fact that it hadn’t occurred to her to find out ahead of time whether Wendy already had plans tonight added to the moment’s truthiness.
“I, um…Yeah. That, that would be cool.”
Mabel tried not to jump for joy, or pump her fist in the air, or otherwise show the intense feelings of both accomplishment and relief that Wendy’s assent had given her. She just said, with her usual cheer, “Follow me!”
They went upstairs, and Mabel pulled out her phone to put on some music. She’d put a lot of thought into her playlist for this evening, trying to find songs that suited Wendy’s taste but that would also set the right mood. She knew she’d done well when the first song came on and Wendy smiled and nodded.
“Hey, the One-Eyed Dolls,” she said as the dirge-like opening bars of the band’s hit song “Substitute Creature” played. “I didn’t know you guys were into this kind of stuff.”
“We have electric tastes,” Mabel replied.
Dipper jumped in. “She means ‘eclectic.’”
“Oh, spare me your cement mix,” Mabel replied.
Wendy chuckled. “Any chance you mean ‘semantics’?”
“Sure, that too,” Mabel replied.
Okay, she thought. I put on cool music, and I lightened the mood. Although the mood-lightening wasn’t so much on purpose. Now, time to get the ol’ love-cobra in striking position.
“You know,” she said to Wendy with what she very much hoped was casual seductiveness, “it gets a little warm up here. You might want to take off that flannel.”
Out of the corner of her eye, Mabel noticed that Dipper was watching Wendy closely as she replied, “Uh, yeah, good idea.”
Having already kicked off her boots and hung her hat on one of the posts of Mabel’s headboard, Wendy pulled off her red flannel shirt and hung it on the other post. Now, she lay on her side on the bed in her white tank top, black jeans, and black socks. Both her body position and her state of dress revealed that Wendy had filled out a little more since the previous summer. Her slightly more hourglass-y shape was rather nice, Mabel thought. And one look at Dipper’s face suggested that he agreed.
But even more intriguing to Mabel than Wendy’s body was her face. Her pale, freckled cheeks were still tinged with pink, and her pupils seemed bigger than normal—a sign of arousal that Dee had told Mabel to look for. Despite her verbal gaffes, Mabel was clearly doing something right.
“So,” Wendy said, glancing around the bedroom, “what kind of weird stuff do you guys do up here?” With a hint of a wicked smile, she added, “Because this looks like that kind of room.”
Dipper, clearly a bit nervous, replied, “Oh, you know, reading, toothbrush races, decoding cryptic messages, typical sibling stuff.”
By some instinct, or impulse, Mabel decided that the time had come for the love-cobra to show its valentine-pink fangs. She got up from Dipper’s bed and moved over to her own bed to sit by Wendy. Then, boldly, she took Wendy’s hand.
“It gets weirder than that,” Mabel said. Then, in her sultriest tone, she added, “Wanna see?”
Wendy’s pupils got even bigger as she nodded and replied, “Uh-huh.”
Mabel leaned her head down and, gently, kissed Wendy on the lips. Then Mabel looked at Wendy’s face. Her eyes had gone saucer-sized.
Mabel and Dipper had already discussed what they would do at this point. So while Mabel was kissing Wendy, Dipper had gotten up from his bed and come over by Mabel’s. And after giving Wendy a few seconds to process that first kiss, Dipper gave her a second one.
Attaboy, Dipper! Mabel thought. Up to this point, she hadn’t dismissed the possibility that Dipper might just panic and flee the room. And probably the house. And maybe the state of Oregon.
As Mabel watched her brother kiss the girl of his dreams, she wasn’t inclined to be jealous. After all, Dipper’s destiny was with Mabel, not with Wendy. Plus, it was fun and a bit exciting to see Dipper kissing a girl three years his senior, breaking the taboo that had always made Wendippity a nonstarter.
Dee’s right, Mabel thought. We should get rid of all these dumb rules. A girl should be able to do the worm with any boy she wants! It shouldn’t matter how old he is, or if he’s related to her.
When Dipper finished kissing Wendy, the girl’s eyes were even wider than before. And then, when Dipper took a step back, looked meaningfully at Mabel, and moved into her embrace, Wendy’s eyes looked like they might just outgrow their sockets and pop right out of her head.
Mabel kissed Dipper—not in a full-on porny way, but definitely not in a sisterly way, either. Then she and Dipper turned to look at Wendy, whose mouth was literally hanging open.
“Oh. Em. Gee,” the freckled teen murmured.
“Well,” Mabel said, trying not to sound smug, “you wanted to know what kind of weird stuff we do up here…”
“…aaaaand it gets pretty weird,” Dipper concluded with a smile.
“This…you guys…wow…” Wendy managed.
Wendy’s astonishment didn’t stop her from kissing Mabel again when the younger girl came back over to her. Then Dipper took another turn kissing Wendy, and then Mabel again. Mabel was pleased to find that with each kiss, Wendy was participating more and more; the third time Mabel and Wendy kissed, the two girls seriously made out.
Now, the time had come for Mabel to lead by example. So before she kissed Wendy yet again, she pulled off her T-shirt, exposing her pink hand-knitted bra. Then Dipper took off his shirt, too.
The moment Mabel and Wendy’s kiss ended, Wendy seized the hem of her tank top and pulled it up and off so fast that she looked like a magician yanking away a tablecloth. The top flew into the corner, and then Wendy undid her bra and hurled it away like it was on fire; Mabel half expected Wendy to run over and stomp on it for good measure.
Wendy’s breasts were lightly freckled and looked like a complete handful size-wise, yet they were also firm and buoyant. Her erect nipples were the same pale pink as her lips.
“Oh my gosh, Wendy!” Mabel exclaimed as she pulled off her own bra. “Your boobs look…”
“…delicious,” Dipper finished.
Mabel and Dippers next move couldn’t have been more coordinated if they’d rehearsed it. They both leapt on to Wendy, tackling her onto the bed, and then began sucking and licking her perfect nipples like mad.
“Oh! Oh wow! You guys!” Wendy cried. “Oh, that’s so good!”
She wrapped her arms around their heads, making Mabel smile inwardly. She was pretty sure she and Dipper weren’t the first people to do this for Wendy, but they were probably the first two people to do it. And between all the nipple-pleasing skills Dipper had acquired in the past few weeks and Mabel’s own understanding of what felt good in the boob area, they were probably doing a better job of it than anyone else had.
After another minute of sucking and tonguing Wendy’s nipples alongside her brother, during which Wendy gasped and moaned nonstop, Mabel decided it was time to take things up a notch. Continuing her oral ministrations, she slid her hand down Wendy’s stomach and attempted to get under the waistband of Wendy’s pants. But the older teen’s skinny jeans were so tight that Mabel couldn’t get her hand in there, so she unbuttoned them and then, less than suavely, got up and yanked the pants down and off. Mabel also pulled off Wendy’s socks; according to what Mabel’s friend Bertie had once overheard her dad say, only Canadians did it with their socks on.
Now, Wendy was wearing nothing more than a pair of plain gray panties. Mabel got back on the bed and resumed sucking Wendy’s titty. Now unimpeded, Mabel’s hand slid easily into Wendy’s undies, where Mabel’s nimble fingers quickly found Wendy’s engorged clit and began to rub it gently.
“OH! Omigosh!” Wendy cried, her grip on Mabel’s head tightening. “That’s- That’s- Oh God…”
Mabel felt Dipper grab her ass and squeeze it as the twins continued sucking Wendy’s nipples. Then Dipper moved his hand to hold Mabel’s wrist where she was playing with Wendy’s clit. No doubt, her brother was excited about what was coming next and didn’t want to miss their prearranged signal.
Indeed, the moment Mabel withdrew her hand from Wendy’s panties, Dipper’s hand was ready and waiting to help Mabel slide those panties down, revealing Wendy’s pink pussy and her adorable little red bush.
Now it was time for Dipper to make his big move. Mabel, still tonguing Wendy’s nipple, shifted her body farther to the side so that Dipper—who had taken off his pants right after Mabel started playing with Wendy’s clit—could move on top of the freckled redhead. Wendy looked at him wide-eyed.
“Oh…” she panted. “Oh wow…”
And then, much to Mabel’s gratification and no doubt to Dipper’s as well, Wendy spread her legs.
Dipper pushed in, and Mabel could almost feel the intensity of Dipper’s pleasure just from the excitement and sheer joy on his face. Wendy closed her eyes, and her lips were parted as Dipper pushed into her to the hilt.
“Ohhhh, yeahhh…” Wendy and Dipper moaned in unison. Then Dipper started thrusting slowly, and Wendy moved with him.
Satisfied that all was going well in the fucking department, Mabel continued sucking Wendy’s cute, freckled titty. She also reached a hand down between Dipper and Wendy’s pelvises and gently rubbed Wendy’s clit while using her other hand to rub her own.
“Oh God…Dipper…M- Mabel,” Wendy moaned. “I think…I think I’m…AAAAH!”
Wendy’s body spasmed powerfully beneath Dipper’s. Fortunately, Mabel and Dipper had anticipated that so much stimulation might set Wendy off, so they didn’t let Wendy’s climax stop them from continuing to do what they were doing.
“Ohmigosh…” Wendy panted as she came down. “Omigosh you guys…”
Mabel raised her head from Wendy’s chest and said, “One orgasm down, lots more to go!”
Dipper kept fucking Wendy steadily, and Mabel continued playing with Wendy’s clit and her own while sucking the older teen’s nipple. Periodically, Mabel would look over at Dipper’s face to see his blissful expression, and she was both glad and proud that she had helped make his long-held wish come true.
Soon, Dipper and Wendy were fucking faster, and Mabel accelerated her clit-rubbing to match their pace. Mabel was starting to breathe hard through her nose, because it turned out that seeing and hearing her brother and his older-girl crush fuck was pretty damned hot.
“Wendy,” Dipper panted, “I’m gonna…really soon I’m gonna…”
“Oh God, me too!” Wendy cried.
“Mmm phmmm!” Mabel shouted—the best approximation of “Me three!” that she could manage with a mouthful of Wendy-boob.
They all came, clutching one another tightly as their bodies were wracked with spasms of pleasure. Then Wendy fell over sideways, holding Dipper and Mabel against her and pulling her legs up so that she was fully on the bed.
Mabel could only imagine how much cum her brother must have shot into Wendy. Then she realized that she didn’t need to imagine it; she could find out for herself. Besides, Wendy’s orgasm train was rolling now, and Mabel wanted to get it up to full speed.
So Mabel moved down on the bed until her rosy-cheeked face was between Wendy’s freckled thighs. Then she started eating Dipper’s cum right out of Wendy’s pussy.
“Oh God,” Wendy moaned. “Oh wow, Mabel…”
Looking over the crest of Wendy’s pubic mound, Mabel saw Wendy pull Dipper to her and kiss him passionately. Then she released him and glanced down at his cock, which was now largely flaccid.
“Put it in my mouth,” she breathed. “I wanna get you hard again.”
Eagerly, Dipper got up on his knees in front of Wendy’s face. She took his whole cock into her mouth and sucked it gently. Then, when it grew harder, she moved her head slowly forward and back again and again, massaging his length with her lips.
Wow, Mabel thought. Dipper’s getting his first blowjob. And from a girl who knows how to do it. I’m so happy for him.
It seemed that Wendy was full of surprises, because she then did something that Mabel hadn’t expected: As soon as Dipper’s cock was fully hard, Wendy stopped sucking and looked up at Dipper.
“Dipper,” she gasped, “I want to watch you fuck Mabel.” Lust seemed to flare in her eyes like a bonfire on a windy night as she breathed, “I wanna see you fuck your sister.”
Ooooh, Wendy, you little vixen, Mabel thought as she swallowed the mouthful of cum she had collected from Wendy’s pussy with her tongue. How did I not know you were such a perv? Which is suddenly my favorite thing about you.
“Sure, okay,” Dipper said with a horny grin. “And just to make it extra fun…”
He pulled open his nightstand drawer, grabbed out the tube of lube that now lived there permanently, and put some on his cock. Then he got up on his knees behind Mabel and slowly pushed his slick member into her ass. Mabel moaned into Wendy’s pussy.
“Wow,” Wendy breathed. “I’ve never even tried that. You guys are animals!”
Mabel enjoyed the sensation of Dipper hilting in her ass, and Wendy witnessing it made it feel even more deliciously perverted. But Wendy also sounded much too coherent for Mabel’s liking. It was time to turn up the volume, so Mabel started sucking on Wendy’s clit.
“Oh! Ohhhh…ooooh…” Wendy moaned.
That’s more like it, Mabel thought.
It was hard for Mabel to focus on everything she wanted to focus on: the pleasurable sensations of Dipper’s cock moving in her ass, the exciting challenge of pleasuring Wendy—hopefully to the point of orgasm—with her mouth, and watching Wendy’s face. Wendy seemed to be having a similar first-world problem: Her eyes would close whenever Mabel did anything particularly stimulating to Wendy’s clit and then fly open again because the freckled teen seemingly didn’t want to miss a second of the Pines Twins Anal Incest Extravaganza.
Thus encouraged, Mabel ate Wendy out with increasing vigor, matching her intensity to the increasing speed and force with which Dipper was fucking her ass. Mabel also switched up her technique, rotating among clit-sucking, licking, and tongue-fucking, and Wendy’s ever louder sounds of pleasure suggested that this was a good approach.
I guess Wendy has electric tastes, too, Mabel thought.
Even though the stimulation of being assfucked by her brother was pushing Mabel closer to orgasm and she was increasingly tempted to reach down and rub her clit to get the rest of the way there, Mabel held off until Wendy was panting and moaning nonstop—a clear sign that the teenager was almost ready to blow. Then Mabel’s finger raced around her clit and her brother pounded her ass until he grunted loudly and shot his load deep into her bowels, and then Mabel had to stop eating Wendy and scream as she came. Wendy must have been incredibly turned on by the sight and sound of the twins climaxing together, because a moment later the teenager was screaming in orgasm, too.
Panting, Mabel turned on her side and rested her head on Wendy’s thigh. Dipper moved up next to Mabel and laid his head on Wendy’s other thigh. Wendy reached down idly played with their hair as they all rested for a few minutes.
“Hey, Dipper,” Wendy murmured dreamily, gently breaking the silence. “Nice crewcut, bro…”
“See? Wendy likes it,” Mabel said, then giggled goofily.
Maybe this comment about his haircut was just the confidence-booster that Dipper needed because, somewhat to Mabel’s surprise, he moved up next to Wendy on the bed, lay down on his back, and then gestured at both his face and his crotch. Mabel was pleased to see that his cock was growing hard again.
“You girls wanna go for a ride?” Dipped asked saucily.
Mabel cocked an eyebrow and sat up. Then she smiled and looked at Wendy.
“You get first pick,” Mabel said to her d teenage friend and new teenage fuckbuddy. “You wanna sit on Dipper’s face, or his cock?”
Wendy looked at Dipper’s hard member with unmistakable hunger. “His cock,” she breathed.
This position proved to be much less complicated with Dipper on the bottom than it had been with Grenda. All Wendy had to do was straddle Dipper’s hips, then lower her ass down and impale herself on his cock. The freckled redhead closed her eyes and moaned faintly as her freckled thighs landed on Dipper’s, putting him fully inside her.
Mabel happily got up on her knees and straddled Dipper’s face. She knew her brother probably had no idea how to eat pussy, but in a way, that made his volunteering to do it even more special.
Indeed, Dipper’s tongue moved around between Mabel’s pussyfolds with only a minimum of skill. It was more like exploration than an actual attempt to stimulate her. But it still felt nice, and it was especially exciting to have Dipper licking her pussy while she watched Wendy slowly ride his cock.
It was only a minute or so before Mabel was no longer content to merely watch Wendy. Mabel put her hands on the older girl’s shoulders, thus getting her attention; then Mabel leaned forward and kissed her. Wendy kissed Mabel in return, and soon, both girls’ mouths were open, and their tongues dueled happily and eagerly. Mabel also took the opportunity to play with Wendy’s breasts, whose combination of softness and springiness made them very nice to squeeze and fondle. Wendy began playing with Mabel’s little titties, too, which Mabel quite enjoyed.
Making out with Wendy was slightly complicated by the fact that Wendy was moving up and down on Dipper’s cock. She wasn’t going that fast, but it still meant that Mabel kept having to continually adjust the angle of her head—at least until she had the idea of moving in time with Wendy.
At first, this solution seemed imperfect at best, because moving up and down on Dipper’s face meant that his tongue couldn’t be in constant contact with Mabel’s pussy. But then, it seemed, Dipper got the idea to extend his tongue into Mabel’s entrance and let Mabel fuck herself on it just as Wendy was fucking herself on Dipper’s cock.
Mabel liked this a lot. She’d been tongue-fucked before, by Candy, and although Mabel hadn’t liked the tongue-fucking as much as she’d liked it when Candy flicked her tongue over Mabel’s clit, riding Dipper’s tongue and thus having control over how deep it went inside her made the activity a bigger thrill.
Between that and all the kissing and fondling with Wendy, Mabel was getting pretty damned excited. So when Wendy started riding Dipper’s cock faster, Mabel was good and ready to ride her brother’s face faster, too. Pretty soon, both girls were bouncing merrily on Dipper, whom Mabel could hear moaning around his extended tongue.
He’s gonna shoot in her any second, Mabel thought. For whatever reason, it excited her to think that Dipper was going to fire another load of cum into Wendy. So she embraced Wendy and rode Dipper’s tongue even faster, inducing Wendy to increase her speed, too. The older teen stopped kissing Mabel and instead panted in her ear.
“M- Mabel- I’m- gonna- cum- I- I’m gonna- AAAAAAAH!”
“NNNNGH!” Dipper grunted beneath Mabel, and as she imagined all that hot cum shooting up into Wendy’s body, Mabel screamed “AAAAIAAAAAH!” and came along with them.
When their climaxes were over, Mabel fell over sideways on the bed, letting the panting Dipper breathe freely. Wendy fell down in front of Mabel and put her arm around Dipper while letting Mabel put her arm around Wendy’s middle. They lay in this triple-spoon position as they caught their breath.
One coherent thought floated through Mabel’s afterglowing mind: that Wendy had seemed to at least kind of know what she was doing.
“This wasn’t your first time having sex, was it, Wendy?” Mabel asked.
“Nah, I got my V-card punched last year,” Wendy replied.
“Uh,” Dipper said, “was that with…Robbie?”
“Robbie? Ew, no,” Wendy replied. “I never went all the way with him. No, my first bang was Stoney Davidson. Super-nice guy; I only broke up with him because he smoked way too much weed. Looking back, I suppose I should’ve guessed that from his nickname.”
She turned her head left to look at Dipper and then right to look at Mabel as she went on, “But this…this was like a whole other thing. What I did with Stoney barely even seems like sex compared to this.”
Wendy looked down down between her thighs at the cum that was oozing plentifully from her pussy and said, “Wow, good thing I’ve got a stash of Backup Plan pills in my room.”
Then she looked at the twins and smiled. “This might be twenty-eight kinds of wrong, but you’ve got me hooked, guys. I’m definitely gonna want more.”
- 5
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- 7
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Depravity Falls