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1.
the term of calling someone a retard, stupid head, or responding to someone by calling them it, after they say something stupid
idiot#1: you got monkey wallupped!
idiot#2: your such an asscrunch
by mike orfei February 16, 2005
 
2.
indicated you like to nibble on the occasional bum cheek, with teeth. Give it a crunch.
You're a fucking ass crunch
by Rich Smith January 28, 2004
 
3.
The name you would give to someone who clearly and directly ruins a moment for you and causes you to feel emotional pain as if you were being bitten or "crunched" in the buttocks or "ass"
You ass-crunch, I was going... to fuck her until you told me she had crabs; now I'll never get laid
by butteredtoastjam September 15, 2010