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1.
a flatulent cloud so potent it is believed to actually contain a high amount of atomized fecal material and when encountered may cause victims to think they've somehow inhaled a poop.

studies in stockholm sweden indicate that vaporpoo may actually be visible to the human eye when exposed to
Bubba Ho-Tep
Gerald decided not to retrieve his wallet from inside the deli because he did not want to encounter the fallout cloud from the vaporpoo he'd left as he exited the booth.
by scottoff August 16, 2007
 
2.
1. Vapor emitted from one's anus. Also known as a fart. Highly offensive, and highly dangerous.

2. A cute nickname for the pokemon Vaporeon
1. Todd made a vapor poo that was so bad my dog couldn't even handle it... so he died.

2. Ew will! I know you're just a dog but please don't vapor poo on top of me...ok?

3. I choose you, Vapor Poo!
by arseniur31 July 29, 2009