Sam was very excited. His dad had said she had to do what he wanted. He knew it wasn't fair, but he was going to take advantage of it. And when Chrissy spread her legs for him he knew she was getting off on this too. She was giving him permission. He took it. His hand slid up, his fingers dipped into the top of her panties. Suddenly her butt lifted off the seat of the car. He felt her moving and he felt the panties sliding down her thighs. He helped and soon they were at her knees, then her ankles. She didn't kick them off, but flopped her knees apart instantly. His fingers found slick, hot, luscious, excited pussy when he slid them back up. Without thinking he slipped his long middle finger into her molten slot and probed. She was tight. Of course she was tight. She was obviously a virgin. He felt for her hymen at the mouth of her pussy. Nothing. He didn't know how she had lost it, but it wasn't there. He got the tip in her to the first knuckle. Then he pushed and his finger slid all the way in her.
"Ohhhhhhhhhh," she groaned. "Ohhhhhhh Sam, I can't believe how good that feels." Sam slicked his finger out and back in several times. Chrissy sighed and her hips started wiggling. "Ohhh yes. Can you make it go deeper?" she sighed. There were definite rhythmic sounds coming from the back seat now, light slapping sounds. "I can't imagine anything feeling better than that," she said.
"There is one thing," her brother grunted. "I mean I did it with Judy Ong one time and she said she had never ever felt anything that good in her whole life."
"Ohhhhhh what did you do?" asked Chrissy, lolling her head back and forth on the seat back.
"Well, I put my cock in her," he wiggled his finger in her pussy. "There, where my finger is."
"Ohhh we couldn't do that," she said. "That would be fucking. And I might get pregnant."
"Oh, I would never make you pregnant," he said. "I would only shoot practice stuff in you." He used the same line he'd used on Judy Ong. She would known he was full of shit, but had let him anyway.
"You can do that?" she panted, getting excited now. "You can control whether it's real or just practice?" Obviously his sister didn't know he was full of shit.
"Sure," he said, as if he believed it himself. "It's hard to learn, but I got the hang of it, and now it's easy."
Chrissy thought she heard a snort from the back seat.
"Well, we can't, because there's no room," she said.
"I brought a blanket," he said confidently.
They scrambled out of the car. Sam opened the trunk and got out a big soft blanket that he spread out on the ground. Chrissy stood in the warm night air, her white breasts plainly visible. She bent over and slipped her mini down her thighs. She stood there naked, uncertain, nervous.
"You're so beautiful," Sam said softly. She smiled tentatively. He took his shirt off, and then dropped his pants, stepping out of them. He kicked off his shoes and pants at the same time. Then he bent over and took off his briefs. When he stood back up his penis stuck straight out from his body, pale in the moonlight. It was slim, long, tapered. It was small at the tip, and got bigger and bigger and bigger toward the base.
"See what you do to me?" he asked. He sounded almost proud.
"That won't fit in me," said Chrissy, completely sure. She crossed her arms over her breasts.
"Yes it will," said her father, as he got out of the back of the car. He stood there, leaning against the car. "It will fit. It was made to fit."
"I'll go slow," said Sam. He reached down and stroked his hard cock a couple of times. "I'll stop if it hurts."
"Promise?" she asked in a little voice.
"Promise," he confirmed. He held his arms out and she accepted his hug. His penis poked her in the abdomen. He reached down and bent it downward, shoving it between her legs. Then he held her close and kissed her deeply again. He moved his boner slowly back and forth, making it rub against her pussy lips.
Chrissy got a weak feeling in her knees as she felt her brother's stiff penis rubbing her pussy lips. His kisses were so hot. She was panting. He was pushing her down, lying down beside her, slipping his finger in her pussy again. She splayed her legs wide open now, kissing him back. Now he was rolling over, halfway on her as he crawled between her wide spread thighs. His finger slicked in and out. Then something else was pushing at her. Was it his cock? Whatever it was it felt good.
Pressure.
Stretching ... her pussy lips were stretching.
It didn't hurt, exactly, but there was a lot of pressure. Now there was something deeper. It was going as deep as his finger had, but it was bigger, lots bigger.
"Wait," she panted.
He stopped immediately.
She squirmed a little, trying to ease the pressure. He sucked in a nipple while he was waiting. The pleasure shot to right where the pressure was and she felt her muscles relax. She tensed them again, pleased to have found some new muscles she didn't know she had. Then she relaxed them intentionally. Her brother groaned!
"Is something wrong?" she panted.
"No. Can I please push again?"
She nodded and then realized he couldn't see her that well. She put her hands on his butt and pulled.
Sam almost came when her pussy relaxed and then squeezed his dick. He gritted his teeth and the urge passed. Then she put her hands on his butt and pulled. She had gotten lots more open all of a sudden. He slid in another three inches as her hands pulled at him.
She was so hot and slick and she wanted his prick in her.
He blew his cork. He groaned and instinct made him thrust. He only had 2 inches to go and his pubes slammed into hers as his penis spat its first long slippery rope of semen.
"Ohhh fuck," he groaned and his rod rapidly pulsed 4 more times. Each time a shot of cum splashed up against her cervix. It pooled there, with nowhere to go. Then, as he pulled back a little and pushed again, he created pressure and that pressure blew all his cum up into her womb.
