Licking someone’s ass hole, then quickly sucking their cock right after.

Poop Brain.
Hey, Kirsten. Do you think later I can get some poop brain?
by HDCatnip March 22, 2018
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poop for brains a non vulgar less offensive alternative to shit for brains one who is extremely stupid and lacks all common sense
this man attempted to rob his neighbors house and got attacked by neighbors pitbull he was lucky to get away with his life what a stupid poop for brains
by littlejimmie May 2, 2019
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Anything that someone says or dose that is really stupid.
by judge dredd7 November 23, 2012
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when you exert so much focus or brain power that you lose all ability to function as a normal human being
Ex. Sarah was dumb, so after question 1 on the exam she became brain pooped.
by cmdrwest May 16, 2017
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when you have to poop so bad you poop you brain
i just brain poop
by laughmaker5000 September 29, 2019
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