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Pronounced 'tuh - knuckle - bub', tnucelbubb is a reverse of bubble cunt. A tnucelbbub is a girl whos crotch sticks out like shes wearing 5 maxi pads, like a bubble. Some men are scared that they will be engulfed by this form of vagina.
guy 1: dude this girls pussy was a huge tnucelbbub, i could use it as a cushion

guy 2: shit man they scare me, those things just swallow you up
by bermuda_vite_boy April 21, 2006
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