Top definition
The growth of an inflammed, festered, and bloody hemorrhoid that creates a groove-like affect in your feces.
Dave, don't do it. Jeff has an ass knuckle, that's not going to be fun.
by Sean Piner September 30, 2006
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Golden Shower Plush

He's warmer than you think.

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2
"Dude the new guy is such a dumbass!

"for real, he's a total friggin' ass-knuckle!
by Skin bone May 21, 2011
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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