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Helping Hand	By : Nastyzak Category: +G through L > Gravity Falls Views: 4143 -:- Recommendations : 0 -:- Currently Reading : 1
Disclaimer: I don't own Gravity Falls or the characters from it, and I make no money from writing these stories.

Chapter List
- 5
- 6
- 7
6 Scenic Driving
“Shit!” Mabel yelled. “That’s gruncle Stan, way early! You go jump in the shower, I’ll grab my bathrobe!” She breathed into his face. “Does my breath smell like cum?”
He wrinkled his nose. “Uh, yeah—”
“I’ll rinse with mouthwash. He’s ringing again! Go, go, go!”
Dipper grabbed a pair of undershorts and a tee shirt and dashed to the bathroom. He heard Mabel padding downstairs and the doorbell’s third ring before he started the water. He soaped everywhere, imagining that Mabel’s sexual fragrance clung to his dick, his lips, and points in between. Opening his mouth, he let the shower spray teeth and gums and tongue, then spat and repeated. He rinsed under water as hot as he could stand.
Somebody tapped on the bathroom door as he turned off the water. “Just a second!”
Mabel yelled, “Brobro! Gruncle Stan is here! And he brought us breakfast!” She opened the door as he stepped out of the tub and grinned at his wet body. “Lookin’ good, broseph,” she whispered. She lifted the hem of her robe to display her pussy and a few shiny strands of her juices and Dipper’s saliva. “I’m gonna come in and kinda clean up a little with a washcloth, and then I’ll be right down, and we can eat. Again!” She giggled.
Dipper hurriedly dressed and then went downstairs. “There you are!” Stan said. He was still the same Stan, his gray hair now streaked with white, but his grin as wide as ever. “I stopped at a drive-thru and got breakfast plates. You wanna pop in a few pieces of toast, I’ll warm these a little in the microwave.”
“And I’ll start a pot of coffee,” Dipper said. “Thanks, Stan We weren’t expecting you until later.”
“Meh, I woke up early and got antsy. I figured you two would be up with the birds. Didn’t mean to wake you. Here’s the drill: After we eat and do any clean-up, you guys pack your junk in the van. Then I gotta stick a germ bomb in there and set it off—”
“A germ bomb?” Dipper filled the Monsieur Café Maker with water and measured the coffee into the filter, setting it for ten cups.
“Yeah, it’s a McGucket thing. Kills all germs and viruses of any kind on the surfaces. Let it puff its smoke out, give it one full minute to do its stuff, then you’re good to go. When we get to the Falls, McGucket’s guys will give us all a quick test, then open up your suitcases or whatever and treat everything inside them all over again. He’s super cautions, but that’s how come we don’t have any cases of the crud in the Falls. Ford said he and McGucket got the idea from some Colorado town that dodged the Spanish flu.”
Mabel came downstairs, dressed in a short denim skirt and a baggy red sweater, just as Dipper poured the coffee. Stan set a plate of scrambled eggs, hash-browns, and sausage links in front of her, and Dipper put a stack of buttered toast on the table. His sister took four pieces, so he popped two more slices of bread in the toaster for himself.
“You’re lookin’ rosy, Pumpkin!” Stan said, spreading strawberry jam on his own toast. “How’s life treatin’ you?”
“Like a prisoner in the Disease Jail,” she complained with her mouth full. She swallowed and then continued, “Mom won’t let us go anywhere or do anything. And if we absolutely have to go out, we gotta wear masks all the time and practically drown ourselves in hand sanitizer.”
“You won’t have to do any of that in Gravity Falls,” Stan said as he dug into his breakfast and Mabel reached for the strawberry jam. “All ya really have to do is let the medics scan you once every week. And it’s not that jam-a-mop-up-your-nose kinda deal. It’s an electric scanner, like in Star Trip. Takes five or ten seconds. They’ll assign you a specific time and day of the week when we get there.”
“I think we can stand that,” Dipper said, finally sitting down to his own breakfast. At least everything was still warm.
“Good coffee, kid,” Stan said. “I’ll help myself to another cup. Don’t get up, I’ll serve myself.”
As soon as Stan’s back was to them, Mabel yanked her red sweater up to show that she was braless. Above each nipple she had pasted two flat googly eyes, and beneath each one she had used red body paint to draw a broad, smiling mouth with a tongue hanging out goofily. He frowned and silently mouthed, “Act your age!” She grinned at Dipper and pulled the sweater back down again.
Stan turned and sat down with his coffee. “So do you guys need time to pack up your bags or—”
“All packed!” Mabel said around a mouthful of breakfast. “All we have to do is lug the luggage!”
“And call Mom,” Dipper reminded her.
“Let’s load up first,” Stan advised. “It’s still early.”
Hauling the four suitcases (Mabel’s version of packing light required three, one huge and two carry-ons, plus her laptop and a makeup kit nearly as large as the computer) and two backpacks down didn’t take too long. Their great-uncle hadn’t driven his convertible, but a slate-gray three-row SUV with the last row of seats folded into the floor, so there was plenty of room. Stan put the germ bomb, a gizmo that looked like a squat can of spray paint, into the vehicle and slammed the door just as white vapor jetted out of it.
They went back inside and each had one last cup of coffee for the road. Dipper put the three cups and the breakfast plates and silverware in the dishwasher, Stan went to the bathroom for a really long time, and in the interval Mabel pulled up her sweater again and holding the hem in place with her chin, she cupped both boobs. She squeezed the right one so it quivered, and did a fake ventriloquist voice: “Hey, Dipper, are you EXCITED that you’re getting to head to the Falls?”
Then she made the left jiggle. “No, he’s EXCITED to be getting head!”
She ended by jiggling them both and fake-laughing “Yuk, yuk, yuk!”
“Real mature, Mabel,” Dipper said.
“Aw, look, they’ve got the pink Pines noses. Where’s your sense of humor?” The toilet flushed and Mabel yanked her sweater down and whispered, “I also changed from a skort to a skirt. Take a peek!” She leaned back and spread her legs to flash her upside-down triangular pubic patch above her pink slit. “Commando’s the only way to go!”
She pulled the skirt down as behind her, Stan came through the doorway and said, “Call your mother, and then let’s hit the road.”
Both Dipper and Mabel said, “You call her!” but Dipper beat her out by about half a second.
“Aw!” she crabbed, but she took out her phone. “Hi, Mom! Huh? Oh, it’s . . . six thirty-five. . . . Sorry! Gruncle Stan got here early, and we’re all ready to go. How is Dad? That’s awesome! No, don’t wake him up. We’ll call and face-time with him this evening. . . . okay, call you when we get there and then call Dad around eight o’clock. Tell him we love him and to keep getting better! Stan says that Dip and I are gonna get checked out by doctors before they’ll let us into town. Yes, in the Mystery Shack. Sure you can! Here, I’ll let Stan talk.”
She handed the phone to her great-uncle, and he said, “Yeah? . . . Sure, I promise to keep an eye on ‘em!” He gave the twins a wink. “Yeah, great idea, you two come up soon as their pop’s over this. I can find you guys a place to stay if you wanna spend a week or two. Don’t worry, he can work from home up there as easy as he can from down here. If the twins want to spend the whole summer, that’s fine by me. . .. Maybe this farkakta disease will kiss off by September. Either way, they’re safe in Gravity Falls. Yeah, the landline number for the Shack's still the same as it's always been . . .. Yeah, love you too and I’ll get in on the face-time thingy with my favorite niece and nephew this evening . . .. We will. Bye now!”
As Mabel took back her phone, she said to Dipper, “Mom was just waking up. She says that Dad had his best night so far and before he went to bed, he walked around the halls to get used to being mobile again. She should have him back home late this afternoon, and we’re gonna call him at eight, and that’s the news, so let’s go!”
Stan unlocked the doors of the SUV. “Let it air out a little,” Stan said, opening the driver’s door and the driver’s side rear door. "The stuff's not poison or anything, but still."
Dipper opened the front passenger door, Mabel the one behind it. “Is it gonna be stinky?”
“Not so’s you’d notice. Kinda a hospital smell.”
“Did you trade in the Stanleymobile?” Mabel asked. “I’ll miss it!”
“Nah, this is Ford’s van. I just borrowed it for the drive. Okay, the air should be good now. Dipper, you ride shotgun and I’ll take the first couple of hours driving. You kids ever driven a van?”
“Mom’s got an SUV,” Dipper said. “Mabel and I drive that all the time.”
“This one’s bigger, though,” Mabel said. “Can’t wait to get my hands on the wheel!”
“Yeah, well, for now you get in back and nap. I’ll drive first, then Dipper will take his turn, and last I’ll ride shotgun again while you drive. I gassed up first thing when I got to town here, so we won’t have to stop until we get to Oregon. Everybody been to the john?”
“Yes,” they both said.
“Seatbelts?”
“Got ‘em,” they both said.
“Then away we go!”
Traffic was extraordinarily light. Not only was it still pre-rush hour, but with the schools closed and the majority of people who could work from home doing it, the pandemic had drastically reduced the number of vehicles on the road.
Stan stayed just a little over the speed limit. “Rule of thumb,” he advised, “is that no cop will bother stopping you for speeding if you’re just five miles over the limit. So I set the cruise control for four miles per hour over. I only had to take it off twice on the way down! If it wasn’t for people gettin’ sick, this epidemic would be the best thing ever for traffic.”
Dipper and Stan chatted as they headed north. How was everybody in the Falls? Fine, Soos and Melody were looking forward to coming home maybe in June if the pandemic eased off, but it was bad down in Mexico and they were sheltering in place and leery of exposing Abuelita to the virus. Ford was well and happy, adjunct-teaching a couple of courses at Backupsmore University by computer link and as usual tracking down weird stuff in the Falls. He was living in a house just round the corner from the Gravity Falls Library and was happy as an amused clam.
So on and so forth for about a hundred and eighty miles of the nearly five-hundred-mile trip until Stan pulled over in Red Bluff, where they took bathroom breaks before Dipper got behind the wheel. He had to adjust the driver’s seat and rear-view mirrors a little. He had grown tall and lanky over the years, and now he could look Wendy straight in the eye, but Stan was still a bit taller than Dipper, though the old man had shorter legs.
For the first thirty miles or so of Dipper’s turn, Stan talked him through everything, but the big SUV handled well and he had no trouble. “When did Grunkle Ford buy this van?” he asked.
“He got it last summer, got a good deal ‘cause he banished a ghost from the dealership. He wanted something big enough to haul, you know, alien bodies and stuff, I dunno. Anyway, for this trip I just borrowed it ‘cause it’s roomier than the El Diablo. Okay, you’re doing good. Set your cruise control but remember, it ain’t an autopilot. I’m gonna get some shuteye for a while. Keep your eye on the odometer and when you’ve rolled off no more than two hundred miles, find a place to change drivers. And maybe to hit a john again. Never pass up a chance to pass out some water.”
“I’ll keep that in mind,” Dipper promised. For a while Stan dozed, while Mabel snored away in the back seat. The day was clear and reasonably warm, the pavement dry, and the drive not bad at all. They had already crossed into Oregon when Stan stirred.
He yawned. “Where are we?”
“Just north of Medford. It’s been, uh, a hundred and ninety-some miles.”
“Good, find a convenience store that looks open and let’s top up the gas. And we can all have a potty break.”
The van had been on the road for over five hours, and the time was close to noon. They found a gas station with attached convenience store and took care of business while an attendant filled the tank. Stan paid the tab and set off another germ bomb before he let Mabel take the wheel. “That won’t kill any bugs we may have breathed in, but it’ll keep our clothes and shoes clean. All right, Mabel, make sure the seat is adjusted right for you . . ..”
They agreed to wait until they were in the Falls to have lunch. Incredibly, Mabel said she was too excited to eat. She hauled back onto the freeway north.
Mabel tended to want to pass any vehicle she saw ahead of them, but Stan finally persuaded her to set the cruise control and live with that. As it turned out, she made good time and a couple of minutes after four in the afternoon they pulled into the Gravity Falls Testing Station.
That was new, a low, long building like a six-bay garage. At Stan’s direction, Mabel drove into the second bay from the left. The automatic garage door closed behind them. Something hissed, and Stan said, “Sit tight.”
“What’s going on?” Mabel asked.
“More anti-germ spray. It's not toxitc, but it might make ya nauseous if ya breathe it in. Hang on.” They heard a rush as an exhaust fan started to whir. “Just wait. That light will turn green when—there it goes. We can get out now. The crew will come out, open the luggage, and disinfect everything, takes a few minutes. Pumpkin, you go into the room marked ‘Women’ over there. A nurse will take it from there. Dipper and me will go into the Gent’s. We gotta all get tested.”
They got out. Dipper said, "It's way cooler up here!"
Stan said, "You can put on a jacket before we start for the Shack. Here come the guys to sterilize the suitcases. Let's go over to the testing rooms for our germ scans."
That took less than five minutes, but afterward they had to wait another ten until one of the two technicians at the van waved them over and told them they were good to go. When she got back in the driver’s seat, Mabel bitched a little: “I like the test where they just point a flashlight thingy a little bit into your nose and two seconds later it dings and says you’re virusless. But man, that detox stuff is weird! Why’d I have to strip off? And then that lady squirted me all over with bug spray and she complained about the way I was staring at her!”
“Spray was like the germ bomb, gets germs off your skin, but it's safe even to breathe while it kills any viruses on the outside of you,” Stan said. “Anyhow, be thankful the tests weren’t a pain. Just a quick nostril sweep with the electronic things. And they cleared us all, meaning they didn’t find a single bug in or on us! But what made the nurse say she didn’t like the way you stared at her?”
Mabel didn 't answer right away. The roll-up door in front of the van rolled, and Mabel started the engine and drove on into town. As she passed the welcome sign, she got round to evading Stan’s question: "Didn’t you stare when they told you to take off all your clothes?”
Stan shrugged. “Nah, I got used to it. Me and Dipper had a guy doctor or intern or whatever, and you had a woman nurse. To them, naked’s no big deal, just routine medical stuff.”
Dipper thought of the eyes Mabel had glued to her tits and thought he understood why the lady who had sprayed her might have felt a bit uneasy. But to switch the subject, he said, “They changed the water tower!”
Stan glanced over. “Yeah, replaced the old leaky wood one with that metal tank, not long before the pandemic started. Hey, did you knuckleheads remember to lock your house?”
“I took care of it,” Dipper said. His heart beat faster. Mabel had turned the van onto Gopher Road, which meant the Shack was just a short way uphill.
And then they turned again, and there stood the Shack. Everything from the tall trees to the full-sized but fake totem pole to the shabby building looked just the way it should. Mabel chuckled and parked near the walk to the gift-shop porch. “Safe and sound!”
Stan checked his watch. “Okay, you two can take in your bags. I got you a key—”
“We still have our keys,” Dipper said. “Unless Soos changed the locks.”
“Nah, some old same old. Let me tell you a couple things before I forget, though. Let's see . . . yesterday I turned up the thermostat so's it won't be freezin' inside. I packed the pantry, fridge, and freezer for you, about a week’s worth, so fix yourselves some lunch, but it’s late, so don’t eat too much. There’s a couple dozen frozen entrees in the freezer, bread and sandwich stuffings in the pantry and fridge. And you know your way around the place. Ford may pop in now and then, but he just goes downstairs to his lab. Call me if you need anything. If you wanna have a car, Gideon will lease you one by the month, but don’t give him any money up front, he’ll bill me for it. Don’t go upscale, get a compact or something.”
“Gideon’s working for his dad?” Mabel asked.
Stan looked uncomfortable. “Uh, Bud died early last fall. Not the pandemic, a heart attack. Gideon’s inherited the used-car lot.”
“Oh,” Mabel said. “We didn’t hear about that.”
The news subdued them, but not enough to keep Mabel from asking, “Hey, gruncle Stan, tomorrow morning could you come over and drive us to Gleeful’s? I think we’ll definitely want a car.”
“Sure thing, sweetie,” Stan said. “All right, then, if you’re okay, I’ll take off. I’ll be back this evening around seven, seven-thirty. We’ll do the face-time stuff with your dad and after I’ll take you two out for dinner.”
“Phone us before you come,” Mabel said. “To make sure we’re decent.”
“Ah-hah!” Gruncle Stan made an imaginary pistol with his thumb and forefinger. “Don’t you get up to nothing! But, yeah, I’ll call when I’m on the way. Right now I’ll go return Ford’s SUV. With luck, he ain’t even noticed I borrowed it!”
When he’d gone, Dipper briefly called their mom to touch base—“We’re here,” he said, and she told them she and their dad were home.
Then the twins carried everything up to the attic bedroom. The beds had been stripped to the bare mattresses, and everything was dusty, so Dipper broke out the small vacuum cleaner and Mabel wielded the feather duster. In the old wooden chest they found brand-new sheets and blankets, still in the factory wrappers. They made the beds, and at Mabel’s insistence, pushed them together to make one wide bed. Then she peeled off her sweater.
“What are you doing?” he asked.
“Getting indecent! Oh, fuck, my puppets’ mouths got all smeary.”
He reached over and plucked off one of the fake eyes.
“Ow! Let me do that!” She carefully peeled off the other three. They left pink spots, as if Mabel were growing extra nipples.
Dipper shook his head. “No wonder the nurse thought your staring at her was weird!”
“How was I supposed to know we’d have to strip? Anyway, she didn’t bat an eye when she saw I wasn’t wearing underwear. Get out of those clothes, Dipper!”
“Mabel, it’s going to be uncomfortable doing sex stuff up here.”
“Come on,” she coaxed. “After that long drive, we need to unwind! I’ll give you a real nice blowjob, and then you can penetrate me.”
Dipper’s face felt hot. “I am not going to—”
“Not with your dick, silly!” Mabel produced as if from thin air a six-inch-long pink nubbly penis-shaped thing with an ivory-colored base. “With Mr. Buzzy!”
“Where . . . were you hiding that?” Dipper asked.
“You couldn’t even guess,” she said smugly. “I also have some water-based lube, KIS gel.”
“Kiss?”
“No, K-I-S! Stands for Keep It Slippery! It’s the best stuff ever for dildoes and vibes and, you know, stranger things! I’ll use some for your BJ. It tingles and tastes minty and it’s totally edible!” She pushed down her skirt and suggestively sucked on the end of her vibrator. It was . . . anatomically correct, with a bumpy pink shaft, its own purplish glans and everything.
Dipper backed away. “At least let me call Wendy first.”
“Aren’t you horny?”
“Yeah, but like you said, it was a long drive.”
Mabel crossed her arms beneath her boobs. She hooked the chair over with her foot. “All right, go ahead, call Wendy,” she said pouting. “I’m gonna sit right here, and remember, I want to suck you and then I want you to vibe me.”
“I won’t be in the mood to do anything with those mouths on your boobs.”
“Aw, you have no sense of adventure. But I’ll go get them off with some cold cream.”
She grabbed a white jar from her backpack and flounced out, buttocks jiggling on purpose. Dipper tried Wendy’s number, and she answered, grinning at him from the phone screen. “Dude! How’s it hangin’?”
“We’re here,” Dipper said. “In Gravity Falls.”
“Cool beans, Dip! Dad's gonna let me go home soon as he gets Marcus back to logging. I’ll be there next Friday, early. You’re at the Shack now?”
“Right, our old attic room. Mabel and I are alone here. Soos and Melody and their kids are down in Mexico with his Abuelita and won’t be able to get home again until the pandemic eases off and regular flights resume.”
“Yeah, I knew about Soos and Melody. Wait, I get it, Mabel’s there, so you and me won’t have much privacy? Lucky that my dad and brothers won’t be back in the Falls for another three-four weeks, ‘cause even after Marcus gets over enjoying his bed rest, they’re gonna stay here while Dad finishes that big job cleaning up after last winter's ice and wind storm. I’ll be all alone in our place for like five weeks. And, man, you’re always welcome in our house. As they say, mi cama es tu cama!”
For a second Dipper didn’t realize what she had said. Not “My house is your house,” but “My bed is . . ..”
Nice!
Mabel showed up in the doorway, both her boobs shiny from the cold cream. She saw that Dipper was face-timing and held up a finger to her lips to show she would stay quiet. She sat in the chair, spread her legs, and, smiling, began to play with her pussy.
“That sounds great,” Dipper said, half distracted by Mabel. “Oh, hey, we’re gonna have wheels because Stan’s planning to lease us a car for as long as we’re here.”
“Fantastic! I got a new—well, really used, but it’s new to me—Jeep. I’ll swing by the Shack soon as I’m back in the Falls. Did you all have to do the McGucket two-step? Strip down and get spritzed?”
“Yeah,” Dipper said. “And we tested negative.”
“Yeah, the Falls is probably the healthiest place in the world to be. You look a little red in the face, though. Sunburn?”
No, Mabel’s little sex show. “I’m just excited at the thought of seeing you,” he said.
She glanced around and then said softly, “I’d shoot you a quick boob pic, but no telling when my brother will come stomping in. He’s out of bed and a whole lot better today, but so annoying. Anyhow, I’ll show you plenty when I get back home. Assuming I test negative! If I don't, I gotta get McGucket's special vaccine and then isolate for three days an' nights."”
Now Mabel was provocatively sucking on the dildo as she rubbed herself.
“I hope your test goes right and you get here soon,” Dipper said.
“Oh, I’ll be there. I’m still showing negative on the regular yucky nose-swab tests, and I feel fine. Just kinda . . . itchy if you get my drift.”
“Me, too,” Dipper said, trying to ignore Mabel, who had thrust her butt forward and was dipping her fingers into her wet slit. “Well—I should go, I really need a shower after the drive.”
After a short but awkward pause, Wendy whispered, “Want me to say it first, man?”
“I’m in love with you,” Dipper said. Mabel stood up and turned her back to him, reached around herself and was running her hands over her back and butt cheeks, as if she writhed and acted as if she were kissing someone who was hugging her.
“And I’m truly and deeply in lust with you, Big Dipper. Bye for now. Be ready for me Friday!”
“I will be,” he promised.
As soon as he hung up, Mabel skipped around in a circle and then to the bed. “I love the way my bigger boobs bounce! What do you think of ‘em, Brobro? Don’t they jiggle great?”
“They’re very alluring,” he said.
She hugged him, pressing his face against her breasts. “All nice and soft with the cold cream. And aren’t my nipples pointy! Come on, strip for Mabel!”
Dipper took off his clothes and dropped them on the floor as Mabel picked up the vibrator from the chair. “I’ve never used one of those things before,” he said.
She handed him the vibrator. “Okay, Brobro, orientation time. See the black switch on the bottom? That’s just on and off. Turn it on.”
He flicked the switch, and the vibrator started to buzz, the glans blurring with the motion.
“Now,” Mabel said, “if you hold the base here, just before the pink starts, you can turn the lower part. That speeds it up. Go on.”
The vibrator buzzed frantically. One more click, and it started to throb along its full length as well as vibrate.
Mabel said, “Yeah, that’s for when I get real close. Don’t do it prematurely. Here’s what we’re gonna do. I’ll go on my knees and blow you. You can clamp onto my head to signal me what you like and when you’re ready to cum. Then after you get off, I’m gonna be ready for Mr. Buzzy. You take my place kneeling on the pillow, I’ll take yours on the bed and spread out for you. Oh, wait, I forgot the lube!”
She rummaged in her backpack while Dipper experimented with the vibe controls. Then she said, “Got it!” The KIS was in a four-ounce plastic bottle. The lube looked clear and thick, like hand sanitizer. Mabel squirted a little drop onto her finger and held it to his lips. “Taste.”
He licked her finger. It didn’t taste of much, a little bit like spearmint. “See?” she said. “It’s nontoxic and it feels great. Now you on the edge of the bed and spread your knees.” She tossed a pillow on the floor and knelt on it. “Gimme Mr. Buzzy. I’m gonna put him right here on the table. Now then, when you start to get me off, first squirt a little of this stuff in your palm, like this.” She demonstrated. “Then you’re gonna stroke it all over Mr. Buzzy, paying attention to the tip. Like . . . this.”
Kneeling there, she smiled up at him. “Ooh, you like that. I think this is your biggest boner yet!”
“That stuff's very slippery,” Dipper said. “And you're right, it tingles.”
Now she was polishing his knob with the palm of her hand, making him squirm. “Yeah, very slippery’s the idea. If you really, really, really squick out about fucking me, maybe, no promises now, but maybe you can lube up real good and we can try butt stuff.” She giggled. “I can tell that got your attention! Yeah, nice one, Dip. Now I’m gonna suck. Just lean back and enjoy it. And remember . . . mmm . . . about guiding me with . . . smack . . . your hands. Glompf!”
For the second time since waking that morning, Dipper was on the receiving end of a slow, satisfying, thorough blowjob. Mabel was getting more expert at it. This time she still didn’t try to deep-throat him, but she took about two-thirds of his dick into her mouth without gagging. And her tongue, oh, God, she was getting so good at that. And she played with his balls and even pressed a finger on the spot just behind them, startling him.
It felt so fucking good! He clutched her hair.
“Mmm-hmm!” she hummed. She was fingering herself again with her free hand, and—looking down at her sharp-tipped boobs—and feeling her mouth tight around his dick—
“Cumming!” he said through his teeth.
His dick all but thrashed, though she managed to follow it, swallowing greedily. The last spurts came more slowly. She slurped, showed him her frosted tongue, and swallowed, then licked him clean. “Good?” she asked huskily.
“Yeah.”
“God, I love semen! My turn. Grab Mr. Buzzy and the KIS. Here’s my pussy. I’m already so wet! Now lube him up. Okay, good. Here, I’ll help.” Mabel lay back and reached around her ass to pull her pussy lips apart. “Start slow, without turning it on. When I can take more than about three inches in, rev him up. More lube! I want it dripping. Yeah, looks right. Now—slip just the head in my slit—good boy! Don’t push yet. Rub it up and down. Ooh, that’s so nice. Now slow—keep it right there—and push. Oh, my gawwwd!”
Watching the imitation cock glide through Mabel’s pussy lips was fascinating. She started to move her hips.
He began to fuck her with the vibrator, in and out, gently. “Turn it on,” she said hoarsely.
He did, and it began to hum.
“Oh, fuck, yeah!” she said. “Sweet! Give it to me. And turn up the speed! Deeper now, so all the pink is inside. Oh, God, my clit's throbbing! Yeah, that feels so fuckin’ hot! Now pump me, Dip! Make me cum!”
Watching the action was stimulating. Mabel’s pussy lips made a shiny, pink, taut band that hugged the shaft. Now she was really fucking, pumping her hips and grunting eager little huh-huh-huhs.
With a sudden inspiration Dipper shifted his position a little. Despite his misgivings, twincest and all that, this was really getting him stirred up again. And he knew how Mabel liked it when he licked her clit. By leaning forward and turning his head, he could keep fucking her with the vibe and just manage to thrust his tongue out far enough—
He made contact with the swollen pink bud.
She grabbed him by the ears and pulled him tight against her.
“Yeah! Fuck, yeah! Eat it! Do it, Dipper!”
It only took a moment more.
Mabel didn’t have to scream that she was cumming.
From the way she arched her back and wrapped her legs around his head and shuddered in ecstasy, he knew she was having a mind-blowing orgasm.
It was so whole-hearted and provocative that now, dammit—
He wanted another one for himself.
***
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