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KO (Knock-Out)
Rikishi kayoed Mysterio with his ass!
by bambooed December 09, 2009
10 7
1. A gesture of confirmation.
2. Another way of saying "okay".
3. In good condition.
Used by Mr. Saturn in the SNES game Earthbound.

Can you get me that book over there?

"Are you kay-o?"
by David S May 17, 2006
9 5
Someone who calls a woman "whore" or "slut" because he knows she is out of his league and that she would mock him for the size of his penis.
That poor dude is such a kayos he couldn't get water from the town pump.
by Citizen Kayos March 06, 2008
11 9