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1.
When a girl walks into a room and all the guys heads cascade downwards to stare at her ass.
Those guys showed ass effect as the girls passed by them.
by xDarkAbyssx June 15, 2011
 
2.
Derogatory name for BioWare's "Mass Effect".
The storyline is plain and stinky, the engine is horridly bug-swarmed and everything resembles an attempt to turn "Knights of Old Republic" into an action game.
Gamer 1: Did you play any Mass Effect game?
Gamer 2: Ya mean, Ass Effect? Both parts suck, but 2nd was 1% better.
Non-gamer: All games from those medics are like Ass Effect (and all other games are even worse)
Gamer 1: Ugh! Shut up about games, go back to your library!
Gamer 2: Don't be that harsh towards my brother!
by Idionicle October 06, 2010