"No, Doug! You can't come!"

Robyn knew she couldn't let things go this far. She was about to cry when she heard her brother give a sigh and suddenly pull his cock from her pussy. It pressed up against her belly. She could feel the slickness of it and the pounding heat. Doug kissed her and pumped his hips, sliding his cock across her navel. The hot spurts of cum boiled out and then Robyn pulled in a quick breath.

"Ohhhh!"

Her cunt was about to explode too. When her brother had pulled out, she'd been left dangling. She needed to be hugged and rubbed some more. She only wished she could have his cock again.

"Touch me!" she begged. "Ohhhh, Doug, do something!"

Doug was coming. He couldn't pay any attention to anything else. He kept pumping his ass, rubbing his cock around in the slick, cummy mess he'd made on her tummy. Robyn was almost crying now.

Doug got a hand down and pushed two fingers into her pussy. It wasn't nearly as good as his cock had felt, but Robyn writhed around against his fingers, gasping and crying and feeling the tickle around her clit grow more intense.

"Uhhhhh, ohhhh, this is it! Ohhhh, Doug, I'm coming!"

Her ass did a wild dance against the mattress. She could feel cum dripping down her sides. She could feel Doug's mouth lolling wetly against her nipple. Robyn bucked violently now, fighting for that razor-edged ecstasy she knew was there. Her brother finger-fucked her deeply as she arched her back and gave a low, animal groan. Her lean body shuddered as if she were being whipped.

"Yuuuuhhhhh!" she gasped, coming hard. Doug was amazed at her convulsions. He seemed to watch her as if she weren't really his sister, but some strange, wild animal. Robyn felt wild. She couldn't control the convulsions of her body as she tossed and kicked on the bed. Doug had rolled off of her and was, prodding her deeply between the lips of her cunt with his fingers. Her muscles squeezed down around his knuckles as she kept coming.