A declaration of general displeasure with the context of said statement. May be used at any situation where something triggers a general negative reaction. No further explanation is needed, and it is important to point out GaAs can be used in written form as well, such as on Facebook.
Dude I think I just failed bombed this test... shit my mom is gonna kill me." "GaAssssss
"GAAS": An e-reply to the Internet acronym TLDR (when used to mean "Too Long, Didn't Read"). Sarcastic, but appropriate when the length of the original message was only "too long" for a sound bite bitten, txt msgd, acronym atrophied brain.