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is a second navel formed in the pelvic region of men by an overabundance of fat depositing in the areas surrounding the genitals causing the penis to become engulfed in a layer of fat.
That guy's so fat, he's gotta use a q-tip to clean out his gunt-button.

Friend: "Dude, check out that guys nasty gunt!"

You: "No man, that guys got a dick; he has a gunt-button."
by codiesels March 05, 2011