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1.
A siren-like fart which is just like a fart, but can make different noises. Just classified at a much stronger frequency. A fart that changes pitches mid-fart.
Woah did you hear that cop car pass by? Nahh man it was just my chompa.
by TGFLaundry May 02, 2011
 
2.
see chomper
The crazy man gave the crazier woman a chompa.

Watch out or I might give you a chompa!
by Beno December 10, 2003