What does KO mean?

Knock out



Other definitions of KO:

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How to use the term KO:

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More slang terms:

R-BOMB

R-BOMB

this is just for blackberry users, and since everyone uses iphones, you probably will never need to know this. blackberry messenger is called BBM. if someone doesn't respond to a message, they r-bombed the person who messaged them.

YKI

YKI

You know it

HAKAS

HAKAS

have a kick a** summer