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To be in "roast" mode. The "giggles". When one is jostin, one is joking. The ghetto verb for being joked out.
Man I be jost out on these hoes but they still pull up. They be jost out!
via giphy
by Phuque Meen October 06, 2018
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3
Pronouced: yoast
verb
1. To creep girls out the most
2. To hook up with in a creepy fashion
3. To creep out one of the opposite sex
I just josted a bitch.
Im jostin' bitches.
You've been josted.
by the apes March 24, 2007
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4
Jost n. A person who does not do anything with their life.

Josting v. If you are josting, then you are sitting at home in bed with your laptop. You are sitting home all day long.
Zachary: "Dude, I kinda feel like josting today."
BJ: "We josted yesterday! Let's do something else."
by megbitch December 27, 2016
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5
Jost in slovenian slang means a massive faggot. He smells like little dog turds you see every day on the side of the road.
Oh fuck I just stepped on a turd. Pardon me, I just stepped on a Jost.
by 123gayscene123 December 24, 2018
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