"What do you think, Marty?" Linda asked rubbing her fingertips across the erect nipples. "Don't I have nice tits? You can beat-off while you look at them if you want. I wouldn't mind."

Thump... thump... thump... thump...

"Ooooohhhhh... uuuunnngggghhhh..."

This is crazy thought Marty. I'm living in a nuthouse. Mom's getting fucked in the ass while dad is outside washing the car of the guy fucking her. I'm lying in bed staring at my sister's naked tits with a raging hard-on. And now she wants me to jerk-off in front of her. He was half tempted. His balls needed to unload in the worst way.

"Come on, Marty, take it...