the act of kissing ass or brown nosing in a persons face when in actuality you have ill feelings toward that person.
being really nice to your boss to get that new opening that you want but behind his back you talk shit about him.

you - "hey boss did you get a new hair cut it looks great"

your boss - "bitch, stop jeffin'"
by t-ryder January 28, 2009
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The evolved word of "joking" with the slight different first name style change.
Larry: I bought a 2004 Dodge SRT-4 for just one hundred bucks off some old lady.

Hilary: No way!

Larry: I'm just jeffin'.
by Elizabeth L. January 25, 2005
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The educated art of finding and hiding in bushes to escape enemies.
After causing a pursuit, I saw Jordan jeffin it to escape the police.
by Tasedorca June 29, 2017
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The art of hiding from cops, enemies, or just anyone by finding the nearest bush and crouching or standing in it.
i swear if your Jeffin' It right now, I will find you. Which bush are you in?
by Dr. Balbarian October 1, 2017
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Jeffins are one of the most kind boys you'll ever meet. They are sweet, caring, and actually care about you. Jeffin's are different from any other boy, they don't care about looks or body. They'd never ask for nudes. They are very protective of their friends. They are a little quiet and can keep to themselves but are overall just weird, awkward and the most fun. Jeffins make the best jokes. no cap. They will make you laugh until you're crying. They know the most random facts. They also always know the right words to say to calm you down. You can always confide in them and they will only confide in you if the really trust you. They might seem weird at first but give them a chance, they may surprise you.
Person 1: "Did you see that weird dude Jeffin today? Why was he rambling on about some random fact?"
Person 2: "Man, you don't even know him. He's actually pretty cool once you give him a chance."
by avgwhitegurl September 18, 2019
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To fake like you are busy at work when you are not doing a damn thing.
look at him...he is jeffin his ass off!
by Karl White December 12, 2007
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When your gut begins to throw a temper tantrum. Starting with biohazardous farts and slowly building to a terroristic level shit.
Dawg, I was in the middle of class when I started Jeffin'. It was brutal. 6 people died. I'm probably going to jail.
by BasedButt March 3, 2023
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