A penis that is also a poop. A poop shaped like a penis.
Me: Hey Jonathan look at my poop!
Jonathan: Wow that poop is shaped like a penis!
Me: O guess it is a Poopenis!
by the poopanister October 15, 2010
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A poop-brushed penis.
Often misread for "poopennies" which is a a group of poop-brushed penis.
Sarah was so smelly! I had never had poopenis so badly.
by Juan Pedro Andrés November 4, 2006
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