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2 definitions by Dave Briain

 
1.
Unusually large amount of feces that one excretes. Usually has a sausage-like shape.
"Aw man, I just took tha biggest poompy in the bathroom, and it felt soooo good!"
by Dave Briain September 28, 2007
 
2.
Piss and pooing at the same time; instantaneous urination and defecation.
"Hey Sam, I have to go and take a poopeepoo on your lawn!"
by Dave Briain September 28, 2007