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!"

butt-welder by joelh January 12, 2008

butt welder

Rectal intercourse.

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

butt welder by junior September 8, 2003

butt welded 

When you can't get your I.D. out of your wallet from sitting on it too much.

When the doorman at the club asked Billy for his I.D., Billy had to give him his wallet because he had butt welded it in there.

butt welded by PeteyD.com May 26, 2009

buttweeder 

A cosmetician who specializes in completely removing hair from the pubic and butt-crack region, also known as performing a brazilian wax.

Susie prepared for her hot date with a manicure and a visit to the buttweeder.

buttweeder by Makooka December 20, 2010