The feeling of a hot, serrated steak knife wedged up your asshole after a long, violent session of explosive diarrhea.
I have the worst knifeass today after drinking that McDonald's iced coffee.
by knifeass March 11, 2009
5 Words related to knifeass
The approximate 2 - 10 seconds of immense pain inside of a female's anus that comes and goes without warning. It feels like - more or less - a knife in one's ass.
Girl 1: *starts to wince in pain whilst squirming in chair*
Girl 2: Are you alright?!
Girl 1: *stops* Yeah, I just had a massive case of knife ass
Girl 2: Aw yeah I hate that
by deuxgatos January 20, 2011

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