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.
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.”
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
Get the LLM FUB SYNDROMEmug. A) His mother caught him fubbing and was utterly distressed
B) "Johny is such a fubber"
C) "Man I had the best fub last night!"
B) "Johny is such a fubber"
C) "Man I had the best fub last night!"
by Sir Jackinator July 15, 2016
Get the Fubmug. 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.
Used to describe an object, appliance, or machinery that is broken badly with little to no chance of repair. Derived from the term FUBAR.
by with love, Wilbur August 16, 2023
Get the FUBmug. by Wordinventors November 25, 2010
Get the Fubmug. by Zyehx April 29, 2024
Get the Fub Clubmug. The individual in a group chat who constantly posts inappropriate messages and delights in the grotesque and bizarre.
He just a pulled a FUB, why is he in our group chat?
You don’t want to be in their friend group, just a bunch of FUBs.
You don’t want to be in their friend group, just a bunch of FUBs.
by Wanderlust4life January 19, 2022
Get the FUBmug.