Top Definition
An area with a high concentration of flab, so much so that it dangles, much in the same way that a testicle does.
Cammy loves tickling georgia's flab nuts

Cammy:"i love them flab nuts!"
by Cameron haimes December 11, 2011
1 more definition
a flabnuts is sum one hu has soooo much flubber on their scrotum area that u cant even see their testacles in fact u question the existinse of their penis sometimes
holy crap i saw this porno flick they
were fuking but i couldnt see the guys dick because he was such a flabnuts
by santa claus March 19, 2005

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