When someone sits on your ear while you are sleeping and farts. Usually done as sick pranks at late night parties.
Richard "Dude I just gave Brad a Brain Fart!"
George "Dude that's nasty!"
Brian "SWEET jesus!"
автор: Lemon Pie 10 июля 2008
when a computer freezes or starts being dumb. or any one who has a lapse in judgment.
Damn. My computer had another brain fart.

I can't believe Jacob did that. He must've had a major brain fart.
автор: Whoohoo 20 декабря 2007
An incredibly bad(smelling)idea that leaks out of someones head, although these bad ideas can be easily avoided through basic common sense, The term "brain fart" is mostly associated with unavoidable bad ideas that originate from a boss or employer.
Bob's boss looking rather proud leaks out a rather large and foul smelling brain fart by telling Bob "you will have two week work deadlines at the beginning, middle and end of each month".
Bob can easily identify this as a brain fart from the really bad smell and since 2 weeks of time would not exist inbetween the end of one month and the beginning of another.
автор: Kuatolives 25 февраля 2007
"If Ya Don't Stop Thinkin
Ya Brains Gonna Be Stinkin"
nojjhjhhhhhhh dfdf brain fart. fdf f ffdgfggdggffgffgdf fggfgfgdff
автор: MJ cvghfgjghf 24 марта 2007
Commingly meaning to think of something after the fact for example after a fight or in class with an answer and forgetting
Person 1: oh crap i coulda called him a dickhead
Person 2: wow what a brainfart
автор: jake fool 13 мая 2007
A spontanious thought or creative idea.
We were discussing the campaign when i suddenly had a brainfart.
автор: Keith Wijnkooper 9 апреля 2003

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