75th base
When you turn on xbox live and stick your penis through the disc tray, your partner ther sticks their vagina the other side and you have incercourse whilst your dick is being cut on the Halo 3 disc you left in the Xbox.
Terry: Hey Sam I totally got to 75th base last night
Sam: Seariously? .. You're messed up man.
Sam: Seariously? .. You're messed up man.