Wake Forest - Chi Omega's definitions

Knock Knuckles

The act of simultaniously donkey punching and anal fisting a female sexual partner. Each hand goes in far enough that they can knock the knuckles of the corresponding fist. An additional partner can be used if desired.

Yo, that bitch is so kinky, she let me knock knuckles last night!

by Wake Forest - Chi Omega November 15, 2007