My 28 year old, pretty and very sexy wife and I have a good arrangement: she can screw any guy she wants and I have the same privilege with any girl (or guy)For her birthday I brought a friend of mine home and told her she could have him. I told her how big his cock was and she got very excited. She asked me if I wanted to watch, and I said yes, so she led my friend into the bedroom and stripped naked for him (and me). As he watched her get naked his prick grew and twitched. She was on the bed with her legs spread and her pussy was moist and her nipples were bright pink. He got betweenher legs and started licking her clitoris while she squirmed and humped her butt up and down Suddenly, she said Oh! Put your cock in me, I'm about to cum. I watched as his big prick slid into her gaping pussy and she screamed I'm cumming!! his balls were up and the pulsing big vein told me he was squirting his cum inside! I got in back and stuck my KY covered cock in his open asshole, This tripped his prostate and he came a huge load inside her. She said for me to do it again because his prick almost doubled in size and that made her cum again. She said she had never felt anything like that before, and it was wonderful!We did the same thing later, after a nap, and she was happy. she said it was the best birthday present, ever.