Definitions by Groombo

GWAM 

An acronym standing for "Girl We All Mack'd".

Derived from a group of friends who realized they had all made out with the same girl at one point or another in the same night. Now colloquially used to describe a slut.

Maddiee you were gwamming hard last night!

Dude check out all the GWAM's at this party!!

...That awkward moment when you realize she was a gwam

GWAM by Groombo January 7, 2012