something that is extremely hilliarious. it is beyond mere funny. something so FUNny that u slap ur KNEE. similar 2 knee slapper, although these days knee slapper is more of a sarcastic retort. still stems from the same act of slapping a knee.
did u catch 30 Rock last nite? boy is that show funknee!
by Piper Jones March 12, 2010

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