She is ready... but is he?

Matt wiped off his face (Karen had mentioned something about girls not liking guys faces covered with their own cum) and then straddled Tanya.

She looked stunning. Her face and upper torso were both flushed from her orgasm and she was breathing hard. A pulse in her neck seemed to be pounding overtime. She glanced at him and smiled, then looked back at the monitor. "You think you can handle me, Matt? Do you think you can make me cum again?"

He hoped so but he wasn't sure. His experience with women was limited and his experience with tight high school girls was non-existent, unless you counted college-age Betty's ass.

He tried not to stare at Tanya's tits but did a horrible job. Obviously they were nowhere nearly as big as Ms. Chadra's huge basketballs, but they stood straight out from her chest like they were glued on, with hardly any sag but he knew they were 100% natural. She had the boobs all those rich Hill housewives spent thousands of dollars trying to emulate.

"I'll help," Karen said. She took his dick, lined it up with Tanya's pussy, and gave him a shove on his butt.

And... he was in.

Damn, she was tight. From her stories of her experience with her father, he would have expected her pussy to be more relaxed but that simply wasn't the case. The second he penetrated her, her muscles clamped down on his cock like a giant's grip.

He was so close to cumming. God, how humiliating if he squirted the second he was inside of her.

Karen grasped his balls from behind, squeezing them hard. "Hang on, Matt. You're a man. You're in control."

Yeah, like his sister's hand on his balls was going to help him regain control He tottered at the edge of the cliff.