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
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if kay-o was a person it would be jack f because he is a robot and is lost
jack u r kay-o
by fn February 3, 2022
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