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Unexpected (a Pinecest story)	By : Edward_or_Ford Category: +G through L > Gravity Falls Views: 18898 -:- Recommendations : 0 -:- Currently Reading : 0
Disclaimer: I do not own Gravity Falls or its characters. I will not earn any money from this story.

Chapter List
- 4
- 5
- 6
Autumn 2014
The twins were laughing and jostling on the couch while playing Super Smash Bros. It was a Saturday evening in November, and they had been playing most of the day after picking up the game on its release day the night before.
“Dipper? Would you please come up to your room?” called down their mother from the top of the stairs.
Mabel controlled Sonic, and was on the verge of defeating Dipper’s Mario, but he had just landed a combo to increase her damage past 90%. “Just a sec!” Dipper called back without taking his eyes from the big screen television.
“Right now, please!” came the stern reply from their mother.
Dipper froze at the tone of voice, and Mabel immediately commanded Sonic to finish off Mario with Sonic’s Smash Attack, ending the round. Already thrown out of sorts by his mother, Dipper threw a death stare at his sister as he rose from the couch. “Really?” he grumbled.
Mabel looked back with a guilty smile and performed a weak pump of her fist. “Boo ya?” she replied quietly.
Rolling his eyes and dropping his controller on the sofa, Dipper headed up the stairs, taking them two at a time. When he arrived at his room, his mother was standing in the hall, directing him inside. As he turned, he noticed his father seated in his desk chair, waiting. Nervously, he sat on his bed as his mother closed the door.
His father leaned forward. “We’ll get right to the point, son,” he said, raising his hand from where it had been resting palm down on his lap. Dipper’s eyes widened in shock as his father presented him with the nearly empty box of condoms that had been hidden in his desk drawer. Then his chest constricted in near panic as his mother reached to the floor to pick up Dipper’s trash bucket. He noted most of its contents had been emptied, and he knew exactly what he’d be seeing: latex sheaths that had been quite clearly used for their intended purpose.
Dipper immediately assumed that it was all over: his parents knew about his relationship with Mabel! They would split the twins up, they’d send him to juvenile prison, they’d disown him, they’d castrate him, they’d- … Dipper’s brain short-circuited from all the terrible things he imagined was about to happen in the next few seconds. He began hyperventilating in panic.
“Whoa, settle down, Dip!” said his father. He rolled the chair forward and put a calming hand on his son’s shoulder.
His mother knelt down to eye level. “It’s okay, Dipper! Your father and I just want to talk with you. Don’t pass out on us here, okay?”
Enough logical thought remained in Dipper’s brain to realize that his parents would not say “it’s okay” if they knew that their children were having sex with each other. He forced himself to try to calm down as his father continued to hold his shoulder.
“Look Dip,” his father said gently, “we’re just a little concerned over why you’re … practising … with these condoms so much.” He released his grip on his son and scratched the back of his head.
“You’re only fifteen, Dipper,” his mother continued, her voice authoritative, but concerned. She steadied herself before she could go on. “Are you …” She closed her eyes. “Are you already sexually active? Have you been out having sex with someone?”
Dipper realized that he had a chance to get out of this. He just needed to be convincing: he had to lie straight to his parents’ faces, and he wanted to make it believable. They could not be allowed to guess the truth. But he was mortified and frightened.
“No.” he answered simply, mumbling and avoiding eye contact with either of the adults in the room. “I’ve never had sex.”
Dipper’s mother knew him very well. Her eyes narrowed. “You’re sure?” she asked, suspicion obvious in her voice.
“Yes, Mom!” he responded with earnest embarrassment, face red. “I’ve never … you know .... ‘been’ with anyone … I mean, jeez Mom, I’ve never had a girlfriend or even close to one … you know, it’s like Dad said …” he moaned, waving at the bucket of evidence, “... practise … by myself … that’s all!” he finished, cringing pitifully.
After watching his face for a moment, his mother’s face relaxed. “All right,” she relented. “I’m sorry, Dipper. It’s just that … I know that we haven’t talked a lot about this, but … you know that your father and I both waited for one another, right?”
The only thing worse for Dipper than talking with his parents about him having sex was talking with them about his parents having sex. Dipper’s skin darkened even more. “... Yeah?”
“I know here in the city, in this day and age, things are different than they were for us when we were young,” she said, gripping her husband’s hand. “It was easier for us to not get all drawn in … for us to be a little more innocent, I guess?”
His father cleared his throat. “This isn’t news, but your mother and I both came from pretty strict homes, Dipper. Your Grandpa Shermie made sure I was in church every Sunday. We had no unchaperoned dates, the whole old-fashioned deal. I actually asked your grandfather for his daughter’s hand in marriage before I asked her!” Dipper rolled his eyes, as he already knew this and really didn’t want to talk about it. “Yes, it was out of date for me to do that, even then. That was only seventeen years ago.” He squeezed his wife’s hand. “We were both virgins until we married. And again, yes, we know how unusual that was then, and certainly how rare it is now!”
“But there’s something to be said for saving yourself!” Dipper’s mother interjected. “We just … want you to know that you don’t have to … have sex with a girl just because you like her. You don’t have to be in such a hurry!” Then her face relaxed and she chuckled softly. “I know, I know … hormones make things so hard! I have to admit … if we weren’t chaperoned ... “ she began to show a blush of her own, “... I daresay we might not have made it to our wedding night as virgins, either!”
“Oh god!” moaned Dipper quietly, his chin on his chest.
Dipper’s father looked amused at his son’s discomfort, then he sobered. “Son, we can’t stop you from doing what you want. If … if you’re planning on being sexually active, well … using a condom is exactly the right thing to do.” He stopped to nudge Dipper, and the teen reluctantly lifted his head to face him. “We just ask you to consider what we’re saying here. There’s a difference between just having sex, and making love! I’m sure you may find that sex would feel great. But when it’s not just sex … when you don’t squander your one chance you have, to be able to experience making love with someone you just know you want to be with for the rest of your life … it’s … it's simply the most incredible feeling you will ever know!”
How could Dipper tell his parents that he already understood exactly what his father was saying? He swallowed hard, willing himself not to show any of the emotion that struggled to escape.
“We love you, Dipper,” said his mother, “and we’re sure this was not the conversation you wanted to have. Just please think about what we’ve told you, okay?” Dipper nodded in reply, and his parents both gave him a kiss on top of his head as they left his room and retired to the master bedroom.
Heart still beating like crazy, Dipper slowly made his way back down the stairs to the family room. When she saw he was alone, Mabel leaped to her feet and grabbed his hands.
“I couldn’t make any of that out, but that sounded kinda intense!” she whispered urgently. “What happened?”
Dipper wrapped his arms around his sister, and he immediately started feeling the pressure release as she squeezed him back. Quietly he replied, “They found my condoms.” He felt Mabel tense, and added, “It’s okay, they don’t suspect us. But …they were kind of disappointed that I had them. I made them think I was using them to practise, and now they think I want to sleep around!”
Mabel snorted, relaxing and pulling back to smirk at her brother. “Dipper, you big ol’ slut!” she teased, cuffing him on his shoulder.
“Not funny!” Dipper groaned, keeping his arms around her waist. “This is kind of serious, Mabel! They’ve pretty much made it known that they still don’t like the idea of either of us thinking about sex before marriage. So now, what’s gonna happen if they find I’m still using condoms? The ‘practise’ excuse is not going to cut it again! They’ll start wondering exactly why I’m still using them here in the house, and then they might go looking in your room, too!”
“That … would not be so great!” Mabel deadpanned.
Dipper held her tighter. “I love you, Mabel. Nothing will ever change that! But without the condoms, we might not … we might not be able to … make love anymore!” Dipper was on the edge of tears with the thought.
Mabel brought her hands to Dipper’s face and turned his head towards her, her lips quickly seeking his out. After a long, comforting kiss, she used her thumbs to wipe his tears, and murmured, “Maybe …” and then with a crafty look, she continued, “... maybe not!”
The following Monday, Mabel began her monthly period. It had never been an altogether pleasant experience, but she had never raised much of a fuss in the past, either.
However, this particular month Mabel complained much more about the severity of her cramps. The pain was excruciating, she wailed. Wasn’t there something to be done about this? She couldn’t deal with this discomfort!
An urgent appointment with the family doctor was quickly made. After listening to Mabel’s description of her pain, the doctor diagnosed Mabel as having dysmenorrhea. The easiest treatment for the symptoms, she explained, was to be on a daily regimen of COCP, a combination of estrogen and progestogen which reduces the intensity of the monthly cramps.
The medication’s more well-known prescribed usage, of course, was that of being an extremely effective method of birth control, and was commonly called “the Pill.”
They left the doctor’s office, Mabel with the prescription script in her hand. They got into the car and headed to their pharmacy.
“Mabel ... “ her mother said as she steered her way through the suburban traffic, “you know what most people use these pills for, don’t you?”
“Mom!” Mabel groaned, blowing her breath through her lips dramatically.
“I’m just saying, please be … discreet! All right? I understand you need them now, and that the Pill is the best way handle your pain. But don’t let everyone in your school know you’re on them, please. Kids will talk, and word will get around. Some young people will get the wrong idea about you.” She glanced worriedly at her daughter. “Your father and I know that you’ve wanted to start dating for awhile now. Maybe after Christmas, we’ll see how it goes. But if you have a reputation, if everyone knows you’re on contraceptives … you might get a lot of unwanted attention … and get pressured to do things you might want to think about … saving.”
Mabel blushed brightly, embarrassed and extremely worried that her mother would ask her directly if she had ever been active sexually. She had never been able to lie to her mother effectively, and she doubted today would be the day she would acquire the skill.
Her mother sensed her discomfort as they waited at a traffic light. “We don’t have to do this now, but we need to talk about these things. How about we agree to hash this out the next time you ask me when you can start dating?” She smiled sneakily. “Maybe I can keep you my little girl just a wee bit longer!” She turned her attention back to the road as the light turned green.
Mabel saw that her mother cared for her daughter’s well-being as well as her daughter’s reputation. “Okie Dokie!” she replied with an over-the-top pout, making her mother smile wider.
Inside, she felt guilty for misleading her mother, but still relieved that her plan had worked out. Having to keep condoms hidden wouldn’t be an issue for Dipper or her much longer.
It was the morning after Thanksgiving, and the twins’ parents had left to see what “Black Friday” specials could be had. Their father had asked if the kids wanted to come, but they had declined. Their mother told them to fix turkey sandwiches for lunch, and not to expect their folks to return until late afternoon. Dipper and Mabel managed to wait ten minutes after being left alone before they were certain the car wouldn’t come back into the driveway. Mabel commanded Waddles to stay, then grabbed Dipper’s hand and they tore up to her room. Urgently, they clutched one another and smothered each other’s mouths with kisses.
“Oh Mabes-” Dipper gasped desperately. “-I’ve missed you-” kissing her again, “-so much!”, recalling their private conversation where she told him they had to wait until after she started the pills, and for her period to finish, before they could try intercourse again. The medication had arrived in plain brown packaging on Wednesday. Two days later, this had been their first chance to be alone.
Mabel moaned loudly, loving the feeling of Dipper’s mouth on hers, his arms around her, one hand in her hair and the other squeezing her butt. “What's s'matter?” she teased. “Can’t handle-” “-Mabel deprivation-” “-for even-” “-a week?” she giggled between kisses. Her own hands moved over Dipper’s body sensually.
Panting, Dipper pulled his lips away, moving his palms to the sides of her head and gently weaving his fingers into her hair. He kept their noses and foreheads pressed together. “I don’t think I can handle Mabel deprivation ever again!” he breathed, eyes less than an inch away from hers, wide with love and devotion. His chest almost hurt from the effort of trying to communicate the intensity of his emotions to his sister.
Mabel’s insides did that melty-squishy thing that they always did when Dipper would say something earnest and passionate about how he felt for her. Her hands slid up to his cheeks, caressing the edges of his ears, eyes, and mouth with her fingertips and thumbs. Her every sense was filled by her brother, no other distractions invaded.
“I love you, Dipper,” she squeaked.
“I love you too, Mabel,” he whispered back. The twins melted together again, gradually lowering themselves onto her bed.
Neither of the teens had changed from their sleepwear that morning: ridding themselves of their sleeping shirts and underwear took very little time at all. They moved as one, rubbing their nude bodies together as they clutched onto one another tightly. Their fingers and mouths tickled and probed each other, their foreplay quickly escalating the level of their arousal.
Mabel rolled onto her back and pulled Dipper on top of her between her legs. “No need to unroll onto the pole,” she growled as she reached between them to grasp his penis.
Dipper shuddered as he allowed Mabel to lead him to her vagina. She guided his tip to her clitoris, allowing him to rub her button deliciously along his length with several pushes of his hips. Then as he pulled back for another lunge, she aimed him lower. He sank all the way into her in a single stroke.
“Oh god!” Dipper groaned. “This feels … so much better!” He instinctively began slowly thrusting, completely lost in the delight of the warm and wet friction on his member.
Mabel quivered, feeling ecstatic shocks of pleasure. She loved the spontaneity, the lack of needing to stop everything for a condom. And without the rubbery texture, Dipper felt smoother inside her, almost like velvet. The sensation of his slow, careful movements was phenomenal.
The twins were experiencing complete and total intimacy for the first time. The final barrier between them was at last removed. They gazed at one another in wonder, almost shocked with the indescribable feeling of completion.
Then the dam broke. Dipper’s mouth crashed down onto Mabel’s as she used her arms and legs to squeeze his body to herself as securely as she could. Unashamed moans and cries of passion accompanied the sounds of creaking bedsprings and of skin slapping together rapidly. Nothing mattered now except helping each other reach their peak together. After only a minute or so of frantic lovemaking, they desperately held each other tight and cried out loudly as they both climaxed. They had never felt closer or more love for each other than at that moment, as Dipper’s penis delivered his semen unimpeded to his sister's cervix.
Teenage exuberance helped them make love four more times that day before their parents came home. They made each time last longer than the time before, and they were happier than ever with their sex life. It wasn’t just the feeling of complete closeness: the lack of latex made Mabel feel less dry than she had experienced before, and Dipper had far more sensitivity. They both came to the conclusion that although not using a condom was a bit messier, there was no doubt that they would never use one again if they could help it.
- 4
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- 6
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Unexpected (a Pinecest story)