use it or lose it

The unwritten law of cafeteria seating.

"Hey, you stole my seat!"
"Use it or lose it, loser!"

by Chishie August 11, 2006

use 'em and lose 'em

A school of thought pertaining to women as sexual partners. The main idea being to use them as a sperm receptacle, then to ditch them on the side of the road.

I don't do the whole girlfriend thing, I subscribe to the use 'em and lose 'em school.

by Crucian December 10, 2009