What is Knock Knuckles?
1.
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!
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Random Words:
1.
The people who put definitions on Urban Dictionary that are a total wast of time, like how "Ryan is the most sexy guy on earth"..