Sandra wiggled and twisted her little ass furiously atop her brother, giggling and crooning with pleasure. Her ponytails swung every which direction, and her face was screwed up with intense ecstasy. Shari knew just what the little girl was feeling; she had felt the same feeling a few minutes earlier. She wondered how long Sandra had been fucking her brothers. Surely she must have been fucking them for quite awhile. She didn't show any sign of embarrassment that Shari could see.

Her eyes were fixed upon the way Sandra's cunt stretched about Mike's cock. It looked good to her, very good. She could see the tip of Sandra's clit glistening prettily. Shari felt an impulse to go to them, to play with Mike's balls as Sandra rode up and down his cock. She licked at her lips, feeling how hot they were. All kinds of sweet, delicious sensations were flowing throughout her naked body. She didn't really understand the feelings, but she wasn't going to question them, either. She liked the feeling, liked the sensations very, very much.

"Ooooo, Mike!" Sandra yelped happily, twisting her little ass down onto his cock swiftly now. "You're gonna make me come! Ohhh, can you feel it, Mike? Are you gonna come in me, Mike? Oh… oh… Ohhhh!"

Shari saw Sandra's half-naked body shiver then begin to shake. It was strange, seeing this, but the sight was very exciting, too. Sandra wailed loudly as her body shuddered, and she ground her cunt down on her brother's cock almost mindlessly. She made soft yipping sounds now, and she seemed to be gasping for air. Her eyes were wide open, but Shari knew Sandra wasn't seeing anything.

"I'm gonna come, Sandra!" she heard Mike shout. "I'm gonna come!"

"Okay! Okay!" Sandra yelled, her ass grinding very hard. "Okay, Mike!"