buttstrap

A strap used on the butt, usually if the butt is too saggy.

Jas wears his buttstrap way too tight.

by andyGILL May 31, 2005

Buttsac

A sac used to hold one's saggy butt (usually caused by being a buttslut).

Jas has a buttsac the size of a parachute.
Jas sometimes has to use 2 buttsacs, double wrap.

by andyGILL July 08, 2005