Top Definition
An evil unicorn made in the ass end of hell, come to invade the pastures of Unicorns and spread its evil poopness

(Adjective)- Poop Unicorn- a person that is differnt than everyone else, is outside the norm, and may be considered evil
"You know tom you are so mean, you are a freekin poop unicorn"
by The Unicorn Specialist February 03, 2012
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