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poo-nah-mee NOUN

1. an unusually large wave or splash produced in a toilet bowl by a large or well-placed excrement (poo).

2. an exceptionally large, oderiferous or much-anticipated bowel movement.

2011-2012; < Brinston, Ontario, Canada. Based on Japanese word "tsunami", equivalent to tsu harbor (earlier tu ) + nami wave < poo (poo) + nami (wave).
1. (splash) "Whoa... poonami!"

2. "Poonami alert - do NOT go in there!"
by canoebrain May 30, 2012
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The wave of shit that will end up all over the male crotchal area when pulling out too quickly after anal sex.
Little Jimmy finished the deed, and begin to pull out. Unfortunately he had forgotten what Barry had said about pulling out after Anal sex (pulling out way faster than he should have) and so his genitalia were obliterated by the ensuing poonami.
by youwantsome? September 09, 2014
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(noun, verb)Accidental, explosive diarrhea; usually associated with children, traveling, or food poisoning.
"Dude, while I was baby-sitting your kid, he had a poonami in his pajamas. I had to stick him, fully clothed, in the shower."
by Edward Cafeto April 07, 2006
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Combination of "poo" and "tsunami"... as in a giant wave of poo.
I took a crap so bad, it was a like a poonami exploded from my ass.
by Sean Galbraith July 26, 2004
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Synonym for female ejaculation derrived from the words poon and tsunami.
I saw this girl stick a curling iron in her poon basket and when she orgasmed it was a poonami.
by Col. Pooner T. Corntooth February 21, 2005
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