cari istilah yang lo mau, kaya' hipster:
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.
dari Sean Piner Sabtu, 30 September 2006
16 4
Someone who is clueless or stupid.
"Dude the new guy is such a dumbass!

"for real, he's a total friggin' ass-knuckle!
dari Skin bone Sabtu, 21 Mei 2011
4 1