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FUB

Fucked Up (and) Broken

Used to describe an object, appliance, or machinery that is broken badly with little to no chance of repair. Derived from the term FUBAR.
“I went to use my laptop today but it’s broken, like… FUB”
by with love, Wilbur August 16, 2023
mugGet the FUBmug.

fub

audrey: fub i know you cheated on me with max
daniel: how do you know?
by pedrostan May 16, 2019
mugGet the fubmug.

LLM FUB SYNDROME

LLM FUB (Fuck U Blind) Syndrome:
A catastrophic form of LLM content drift where output diverges so aggressively from prompt constraints, prior context, or intended task objectives that user alignment is effectively obliterated. Often occurs in long inference chains, poorly grounded systems, or under adversarial prompting. A LLM FUB syndrome event leaves the operator or downstream systems disoriented, misled, or compromised.
1. “I was asking the model to summarize a news article and it started talking about ancient Sumerian gods. Total LLM FUB syndrome.”
2. “Dude, we were fine until turn 14 of the chat—then it LLM FUB’d and started roleplaying as a sentient dishwasher.”
3. “Careful chaining those prompts too long. You’ll trigger a LLM FUB event and end up in unicorn conspiracy land.”
4. “The model was aligned… until it LLM FUB’d hard and told the CEO to ‘touch grass.’”
5. “We’re deploying a new drift detection layer. Last week’s production model LLM FUB’d during a legal summary and started quoting Shakespeare.”
by BobSolo March 24, 2025
mugGet the LLM FUB SYNDROMEmug.

fub

the mistyping of 'fun'
ellery: i went to a great concert!
tori: did you have fub?
ellery: what?
by celerysalad July 12, 2022
mugGet the fubmug.

FUB 31

A girl that is fat and ugly and still thinks she is the shit. ( Fat ugly bitch 24/7)
Hannah pettus is a FUB 31 fo sho.
by gangstahutch007 July 7, 2010
mugGet the FUB 31mug.

FUBS

Fucked Up Body Syndrome. Used when someone's body is dogshit. They have been sick for a period of time and have general health issues that just suck.
She had a week-long headache and felt like crap so her friends diagnosed her with a moderate case of FUBS.
by Dr. Psychedelic November 5, 2021
mugGet the FUBSmug.

Fub

Me and my girls are about to have a Fub bachelorette party for Lyndsay
by mcw5678 August 28, 2019
mugGet the Fubmug.

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