butt fork 

To jam ones banana in anothers bum.

I just can't get a wink of sleep, I've been butt forked every day this week!

butt fork by Psycho X-murderer Bob (You know You Want Me) November 9, 2003

buttfork 

A person too lazy and fat to get off the couch.

Justin, stop jacking off on the couch and start cleaning some stuff you buttfork.

buttfork by kornpunk[they took my name] November 10, 2008