cari istilah yang lo mau, kaya' ratchet:
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
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