1 definition by Needless to say

JAT is a game played with friends when out at a pub or club. Participants take turns creating as accurate as possible theories about strangers, and as the night goes on, see whose theories come true. JATTING is the verbalizing of the theories, and once you have created a theory about someone, you have JATTED them.
Boy 1 - "Let's JAT that guy and two girls over there!"

Boy 2- "Okay, I think the two girls will make out at some point in the night"

Girl- "Needless to say they will be shafting the fuck out of the each other by the end of the night, and the guy will try to join in"
by Needless to say September 21, 2014
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