brain fart
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
Something ill-considered and said or done impulsively.
Register: slang, vulgar
Where it’s used:
Used
American English
Examples
This is love in the social media age. Candlelight dinner, fine wine, degustation, a lover's face scrunched over a phone screen live-tweeting brainfarts about the relationship to largely uninterested skim-readers.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
An instance of absent-mindedness or forgetfulness.
Register: slang, vulgar
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “brain fart” mean?
Something ill-considered and said or done impulsively.
Is “brain fart” formal or informal?
brain fart is generally slang, vulgar.