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A Kansas City term for "faking" or being fake in general.
" Yo George stop jeffing with Ben, you was just talking bad about this dude a few days ago."
by Gmoney289 January 15, 2018
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2
The act of taking an egg, with draw on face with square glasses on a night out. Often involving taking photos of said egg in unusual scenes.
I went Jeffing last night! He got smashed!
by Kyle454 December 24, 2012
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The act of losing your shit at given moment for things some may find very insignificant. Resulting in your entire day being ruined and most likely breaking anything you can get your hands on.
Why is there a hole in the wall? Jeff was Jeffing over not being able to beat free cell in under 2 minutes.
by Jbarrer December 07, 2016
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4
1. The act of secretly jerking off on video chat in the bathroom while your wife is in the other room.

2. Using childish insults like fat, ugly, and poor when you don't know how to use logic to defend your point of view.
1. Girl 1: Who is that guy?

Girl 2: Just some loser who is always jeffing me on snapchat.

2. You know you've already lost the argument when you start Jeffing.
by Kasilyn13 October 23, 2018
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Verb - when someone says they will show up to an event, then does not.
Jeff is jeffing on my birthday party.
by MissLG November 19, 2011
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Getting totally rad uphills while getting stoked on pain
Andrew: Hey, fancy a jeffing session today?
Martin: Aye pal, sounds super rad...pure get our climb on
by flat_lemon June 27, 2011
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