Top Definition
To masturbate
Going job hunting today?
Nah, got a fifth of vodka, gonna watch yoga, and maybe knock the rocks a bit.
von Ziplin 27. Januar 2010
1 more definition
Similar to saying "pound it" usually involves hitting of two or more clenched fists together in an expression of triumph.
Joms: YEA MAN! I JUST GOT ME A MONSTER!
HOMS: KNOCK THE ROCK!!!!!

*the rock is then knocked*
von TheRealJohnO 14. Dezember 2004

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