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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a fat ass in NY slang
Selena really got the jat
See me poppin out with the jatty okuurrrrttt
by imgoingtobed October 17, 2018
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A dance move where you do a fistbump in a vertical position repeatedly to show excitment
Yesterday, we all jatted because we got the best gpa in the school.
by Jattin boy123 May 12, 2017
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A very hot guy with a sexy heart but already has a soulmate called Emma
Oh my god, I really fancy that Jat guy but he already has a girl called Emma.
by cheeky bxby May 24, 2018
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1. To clean yourself using your own saliva, like what a cat does, except what Jat does.

2. To cut someone off while walking in a group.

3. To try to make friends with someone by following them around 24/7
1. The homeless man had to Jat himself to stay clean.

2. Bubba was getting really annoyed at Henry because Henry was trying to Jat him and walk next to Pam.

3. The greasy child jatted Ollie all day, every day, trying to become his closest friend
by O Dog August 27, 2007
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When your friend acts half cat, half human. Common signs of a Jat are: frequent naps, enjoyment of back rubs and love of eating.
by Jatfan#1 September 3, 2016
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Jat is a word which signifies that the person was just owned, destroyed, humiliated, embarrassed, or outright made a bitch. It is done with a patting motion of the hand, the arm extended fully if possible, toward the subject of the Jat, be it oneself or someone else. The hand is waved up and down multiple times while saying Jat.
"Holy shit I just got owned on my test."
"JAAAAAAAAAAAAAAAAAAAAAAAAAAAAT."

"Oh fuck I think I lost my wallet."
"JATJATJATJATJATJAT."

"I asked a girl out last night - she told me to fuck off."
"Jat."
by LordOfJat February 19, 2010
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