Telling someone that you suck at something. Also used as a sexual reference to a blowjob (Oral sex).
1) "I'm joining the Basketball team" "Dude, Your Knees Are Red, you won't make it" 2)"Hey whose that pretty girl over there?" "Who? Kim? Her Knees Are Red from so many guys she's given head to."
by alex231 May 23, 2011
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Your Knees Are Red • Your knees are out • This shit happens when you've finished, your pants are up to your knees, and you suddenly realize you have to shit some more. • on your knees • Bloody your knees • getting your knees dirty • getting your knees wet • Hit Your Knees • make your knees tocuh your elbows • make your knees touch your elbows