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Define Brain Fart Meaning

Brain Fart
momentary mental lapse as when you see someone familiar but forgot their name the instant you were going to say hello

Lover 1 Susan: Oh John that was sooo good!

Lover 2 John: Ohhh yeah, uh, rats I just had a brain fart. Damn what's your name again?
By Jessamine
Brain Fart
When someone does not perform an action that obviously should have been done, especially when you are under pressure and must think quickly.

Phillies fan: "Dude, Rod Barajas had a brain fart last night! He should have blocked the plate instead of standing up!"

Mets Fan: "That's not a surprise."
By Arlinda
Brain Fart
An epiphany

Dave had a brain fart today, which in turn made Zach's job easier.
By Tamara
Brain Fart
A sudden thought, seemingly out of nowhere, that has nothing to do with the topic you are discussing.

We were discussing the party when all of the sudden my husband had a brain fart and asked me to remind him to change the air filter on his car.
By Minetta
Brain Fart
when you either blurt out something extremely wrong or embarassing infront of people or when you completely forget how to do something or say something

1. forgeting your name
2. I love you!! to someone infront of a bunch of people and they look at you really weird then you say or think oops brain fart
By Ileane
Brain Fart
A moment when you just forget something even if you ran through it a moment ago.

person1: What's that?
(points to chair)
person2: Uh, Uh...
person1: BRAIN FART!
By Rivy
Brain Fart
a bad idea

It was a real brain fart, when he started talking about how his pants fell down while wearing them low.
By Maddalena
Brain Fart
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.
By Carolee
Brain Fart
When you are attempting to remember something very obvious, someting that you know you should know. This feeling often leads to head banging and hair pulling.

bobby raised his hand to answer the teacher's question only to find that he had had a brain fart, and he was unable to answer 2+2.
By Cally
Brain Fart
A sudden and involuntary (although depending on the source, not altogether unexpected) release of ignorance.

Jeff had a brain fart and locked his keys in his car (again!)
By Marabel