a phrase used to describe the experience of complete surprise or shock so great that your rectum can no longer contain itself. Used to reference something in a positive, but unexpected way.
Dude, the ending of "Lost" last night blew my ass out!
That Rocky's burger was so good it blew my ass out.
To try to make someone look stupid by breaking through a facad, lie, exaggeration, or distorted truth. Usually used when a guy or chick is trying to hype themselves up, and someone calls them on it.
When lower gastrointestinal distress is relieved in the bathroom, and the resulting semi- to fully- liquefied remains and flatulence leaves a lingering odor long after the person has left the bathroom
I don't know what he ate, but man, he blew up the bathroom! You won't want to go in there for a while.