Equivalent to Fucked Up, with reference to the CEO of the largest airline in the US in 2012, who has fucked up said airline with his incompetence.
Dude, it's all JefF'd Up! I can't believe you JefF'd Up our plan.
by Mother Jeffer April 30, 2012
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He got jeff'd after being hit by that car.
by MegaMoist December 6, 2017
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When you exaggerate something to the point of it not even being fathomable. Gross embellishment of reality.
He Jeff'd up his claim about having 1645823 responsibilities, when in reality he only had 2 things to do.
by TWSS10 July 31, 2020
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When someone is suddenly no longer your friend after a long period of time, without warning. We all know someone named Jeff who has done this to us.
I've been trying to get ahold of her for days and she won't respond. Guess I've been Jeff'd.
by Logan.c June 7, 2019
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The problem with open source: Jeff Bezos is out there, he's coming for your code, and when he's got his hands on it, he'll have an army of hundreds or thousands of engineers ready to beat the pulp out of you after copying your own ideas.

First used by Evan Czaplicki, the creator of Elm, to refer to PL design.
Man, Facebook really Jeff'd all the Julia devs back in 2018 when they created PyTorch.
by William-Jefferson October 6, 2023
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When a customer refuses to accept or read your response, and demands an immediate different answer from somewhere else.
I've already responded to that customer in chat, looks like they didn't like my answer. Guess I got Jeff'd.
by Capt. Snowbeard May 21, 2021
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