Quantum Brain Fart

is a rule which states that any conceivable thought which ordinarily could be summoned has been lost and has become irretrievable. A complete blank.

He just completely went blank in the middle of the speech. He couldn't say a thing. Musta had a quantum brain fart.

by OMGR8US October 8, 2012

Fart Brain

1. Someone who's head is devoid of nominative brain tissue. Similar to the more common air head the cranium of the subject contains nothing but gas. However in this instance, the gas inside the cranium consists mainly of stinky gut methane.

2. Someone who consistently brain farts.

"I admit that I slept with your best friend, honey but honestly, it didn't mean anything."

"Why don't you just fart off, fart brain?!"

by deadestfish May 3, 2009

Brain Fart

To say or do a stupid

"When I first saw that text I had forgotten what we were talking about and I was like woah what the hell"
"lol, dem brain farts"

by Lemoncake August 15, 2015

Brain Fart

A term one uses when they can't remember anything and are just overall feeling awfully stupid today. When you are trying to solve a math problem, but you completely forget what to do.

Girl #1: Uggh this math homework is giving me a headache.
Girl #2: It's not that hard, we just learned this all in class today.

Girl #1: Yeah, but right now I'm having the biggest brain fart.

by the_true_name_definer ;) December 19, 2018

brain fart

when you forget every thing you learn to do a test

flip i had a brain fart

by laughmaker5000 September 28, 2019

Brain-farting

Brain-farting is when your brain farts in reaction to something hilarious.

Brain-farted is when your brain lagged

Your joke was so Brain-farting

I was daydreaming at my maths class until my teacher surprised me with a question and I legit Brain-farted

by Fucking-Intellect August 5, 2019

Brain fart

Brain fart- also known as “fartus brainus” is very common around students, who study math, physics or chemestry. It’s caused when you’re brain does not know what to do aka it’s about to explode. Treatment: give up or go to sleep

"I had a total brain fart while I was doing the test"

by GeDollar November 9, 2017