simply, Girl With A Mustache
From far she's pretty hot but up close, DAMN, she's 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 means "cool" or awesome.
only the coolest of cool people use this word to refer to something "poppin" or "sweet".
person1- i went paintballing yesterday! it was so gwam!
person2- duude thats the gwamest thing ive ever heard!