“Ha! The pajama bottom bulge. Have you noticed that sometimes it’s really big?”
“Ewww. Stop it. I’m not going to talk about the size of your erections.”
“OK. What makes your pajama bottoms ‘bulge’? Or more accurately, what makes them wet?”
“Do you really think I’m going to talk with you about what makes my pajama bottoms wet?”
“So you admit that something does!”
“Ok. I admit that because I had to pee I ended up bringing wet panties into the truck. And that I’m sitting here with no underwear on under my dress. But this conversation has gone way off the rails. I don’t think I should talk with you about what makes my pajama bottoms wet.” She turned away.
He realized that his playfulness had gone too far.
“Allie. Truly. I have no intention of making you uncomfortable. I was just having fun and I think maybe I have overstepped what’s appropriate. You know I would never do anything to make you uncomfortable. I apologize.”
She looked back at him. “Well thank you.”
They continued to drive on, listening to music and enjoying the countryside outside the window. The terrain was becoming more forest-like.
After a while, Allie offered “But one time I saw that you had a hard-on in your bathing suit by the pool. That night I thought about it and what it might look like if you didn’t have your suit on. I don’t think I had a very accurate picture of it. Thinking about it made my pajama bottoms wet. It was the first time I masturbated thinking about you.”
She looked over to see his reaction, but embarrassed, looked away immediately.
He looked over at her. “Remember last year you had your friend Becky sleep over? She wore those pajamas that were incredibly see-through. It seemed that she was showing off both her tits and her red pubic hair.”
“Oh god. That was so embarrassing. I think she’d have walked around naked if she thought she could get away with it. She obviously was trying to turn you on.”
“Well later, I started thinking about her and masturbating. I tried thinking about her tits and pussy, but it wasn’t working. Then I started thinking about you. Your sensible pajamas. Your goofy laugh. The way your breasts had become woman’s breasts. I got so hard, and I came easily.”
He looked at her, but she wasn’t ready to meet his gaze. He continued “I think about you a lot when I masturbate now.” He turned back to face the road.
She also looked straight ahead. “If I was wearing pajama bottoms they’d be wet now,” she said. She then turned to see his reaction. He was looking over at her.
She continued. “I’m afraid that with no panties, I’m getting the seat of your truck wet.” She lifted her dress. Although it didn’t really reveal a wet spot on the truck’s seat, it did fully expose her pubic hair and opening.
“She looked at him. “Will you think of this next time you masturbate? I probably will.”
She dropped her dress back down to cover herself. “Do you have to pee? I feel like maybe we should stop once more before we get to the cabin.” She put each of her hands on one of her breasts over the dress. “Don’t you think so?”
“I think I do have to pee. Let’s pull over up ahead.”
Gary found a pull-out and pulled the truck over so far that it was barely seen from passing traffic. He shut off the truck’s engine and turned to Allie. You wanted to stop so I could pee?”
“Yes. My side of the truck looks very secluded. Get out and come over here.”
Gary exited the cab and walked around to Allie’s side of the truck. When he reached it, she opened her door. “Let me help you.”
She slid down from the truck’s seat and unbuttoned his jeans. Then she unzipped his pants. He helped by tugging them down a little. His cock, now erect, sprang out.
“Will you be able to pee in that condition?” she asked.
“I think so.” He turned away from her holding his cock. A stream of pee started and he held his cock until it subsided.
“Are you done?” she asked. As she did so, she reached around him and held his cock in her hand. “Let’s see if we can keep it hard.”
He leaned back against the truck’s cab and relaxed as she stroked his cock. It was quite hard now.
“Can I make you come?” she whispered.
He reached next to himself and found her dress. He moved his hand under it and worked his way up so that his fingers were pressing against her pussy. “Can I make you come?”
“I think we should try” she said as she started stroking his cock.
He began massaging her pussy working his fingers up inside her. He used his thumb to stimulate her clitoris and she jutted her hips forward to increase the pressure.
He started moving his hips back and forth in time to her stroking. He could feel the pleasure building inside him. She started moaning and moved her free hand inside the cleavage of her dress so that she could stimulate her nipples.
“Oh God” she moaned. “I’m going to come all over your hand. Will you come too?”
“Yes. Come on my hand and watch my cock come.”
She continued to stroke him until she started to lose control from all the pleasure that had overtaken her. She rolled to her left and started kissing her brother as she continued to try and stroke him.
He moved his thumb and fingers faster as she jerked her hips. He returned her kisses and then gasped as come started to shoot from his cock.
She began coming at the same time and her legs collapsed. She was kneeling with her head back as the last wave of pleasure came over her.
“Fuck me that was good” she said. “That was so exciting. Did you like it too?”
“Allie. It was fantastic. I loved feeling your pussy clench against my fingers. You made me so hard. I think I got some come on your dress.”
“I think you did. Maybe we can rub it off with my pee-soaked panties. We really area a sexual disaster”.
“No. You and your dress and your wet panties and all your talk were a complete turn-on. I never dreamed we could really have this kind of time together. Thank you.”
“Well, thanks for being so turned on by me and letting me jerk you off. I’ve imagined it many times.”
Gary pulled up his pants and buckled them. “So shall we finish our trip to the cabin?”
Allie pulled her dress down and brushed it into place. “Yes, they’re probably starting to wonder about us.”
They got back in the cab and pulled back out onto the highway and began the last several minutes of the drive.
Allie looked at Gary. “Are you going to think about me and jerk off this weekend?”
“I’d like to. But I’m not sure when I’ll get the chance. I imagine the cabin will be kind of crowded without much privacy. Are you going to masturbate and think about our drive up here?”
She considered. “Yeah, I think privacy might be a problem. Do you think we could find a secluded spot away from the cabin where we could get away without anyone knowing where we were?”
“Gary put his hand on her thigh. I’ll make it a point to find one. And once I do, do you think we can enjoy a repeat of our time getting each other off?”
She turned and put her arm around him. “Well, actually, I think I’d like to know what it feels like for you to fuck me.”
The cabin appeared just ahead and Allie smiled as she noticed the large bulge in Gary’s pants.