When you've been driving too long and your ass starts to hurt real bad like a truck/semi driver's ass would.
by Derek M December 27, 2005
A practice used generally by college kids involving assaulting an unsuspecting victim (usually passed out) by placing your anus over the victim's nose.
I woke up this morning with a terrible hangover and a constant shit smell. I think I was trucker-butted last night.
by TBawler March 19, 2010