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A cute way of referring to your cat's primordial pouch.
Jazzy has such a saggy flumpus.
by tehkiki January 27, 2017
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An idiot, lil bro that u want to beat the living shat out of all the time.
the flumpus pissed me off so much that i tied him to a chair and pissed on his face.
by ant April 02, 2004
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