What does O/ mean?
High five
Other definitions of O/:
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How to use the term O/:
There are no example uses of O/ at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:

TTYAW
Talk to you after work

PEBKAC
Problem Exists Between Keyboard And Chair

GIRL
Term used for a young female human, usually a child or adolescent.

DHAFC
Don't Have A Fucking Clue