Garbage Bag Ass 

When a girl that has a flabby ass uses tight jeans to hold the ass in place. You can still tell as it is trashy. Like a garbage bag overflowing, if the jeans ever exploded, you would have a mess. Abbreviated as GBA

Matt: Jeff do you think my ex-girlfriend is hot?
Jeff: Not really.
Matt: Why the f**k not?
Jeff: She has a major case of garbage bag ass.

Garbage Bag Ass by mattcrabbe December 4, 2010

garbage bag asshole 

Term describing the anus of a promiscuous homosexual male.

Damn, bro ... that bitch I brought home from Maneuver's last night had such a garbage bag asshole that I had to squeeze the ass cheeks around my cock so I could feel anything.

garbage bag asshole by CapnCrouton May 4, 2004