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1.
Blow My Ass Off.

Occurs when ingesting extremely gaseous-causing foods or attemping to reenact the burrito episode from "Man verus Food". You feel like you are missing the entire lower section of your digestive tract. Treatment requires a visit to a digestive health specialist which may not be successful. On a postive note, you will be exempt from the phrase, "Stick it up your ass buddy" cause you don't got one!
by Russiachina December 02, 2011
 
2.
Blast My Astronaut Off. Clean version of 'LMAO', or Laughing My Ass Off, for wusses that don't like to cuss but want to stay scene.
Person A: and then I said, that's not a monkey, that's my wife!
Person B: BMAO
Person C: FAIL
by emandee May 20, 2008
 
3.
Brawlin my ass off

Related to the game "Super Smash Bros. Brawl." Its said whenever someone has been playing on-line alot.
Guy 1: Hey! Wat u been doin?
Guy 2: BMAO
Guy 1: Me 2 man. Cant find any1 good...
by Sumguy14 August 20, 2008