Top Definition
After you have a bowel movement, and you think everything has gone down, one little piece of poo will come floating back into the bowl. Since it has come back, it is a poo-merang.
In an Australian accent, "Krikey, I thought I was done, but I gotta flush again. I got a poomerang".
by David L. Brown March 29, 2008

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POO-merr-ang. Noun. Primarily used in corporate office environments involving the distribution of poo. Not to be confused with poo that rolls uphill or downhill, the poomerang is poo that is sent but inevitably returns at much higher velocity to its original vendor.
Nathan: "Why are these servers so messed up. The person who put these in must have been really dumb!!!"

Rick: "Uh, dude. You're the one who put them in, and built them wrong. Now go fix it. Poomerang, man."
by KJ275 August 07, 2012

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noun
(pronounced like boomerang) a bowel movement that inevitably returns with a vengeance after prolonged postponement

verb (intrans)
to experience the return of an urge to defecate, often with increased intensity, after prolonged postponement
We'd better find a bathroom soon, it crawled back up but I know it's about to seriously poomerang on me!
by Victor Cuevas July 22, 2006

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Lotsa space for your liquids.

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The Urban Dictionary Mug

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One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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