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A poopaloon is when a person(s) releases their bowels into a colored latex enclosure (balloon), with the remainder of the mixture being either urine, helium, or air to create the illusion of being a regular balloon. The poopaloon is similar to that of a water balloon (with one obviously shitty difference).
I gave that young lad a poopaloon in appreciation for fucking up my petunias yesterday.
by Shitty P March 25, 2011