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The dirtiest, smelliest, or most pungent point on an individual's body at the time of reference, often a place of anatomical significance.. ie. belly button, arse cleft, nipple, advanced neck pimple, rotten toenail.
"I have a strange tingling in my crud bud.."

or

"Look buddy, i'm telling you this for your own good.. you've gotta do something about that crud bud of yours.."
by Badgery November 14, 2006
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