butt welder

Rectal intercourse.

I was visited by a butt welder in the showers last evening.

by junior September 08, 2003

butt-welder

In a car, a seat heater that roasts your ass to the point where you think your cheeks are going to melt together.

friend - "Holy crap, dude, my new car has seat warmers, and they're total butt-welders!"

by joelh January 12, 2008