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?!"

Fart Brain by deadestfish May 3, 2009

stinky fart brain 

A stinky fart brain is someone named vanessa

stinky fart brain wouldn’t pick where we were eating she just kept saying idk

stinky fart brain by Mfjizzyj August 2, 2022

Quantum Brain Fart 

When you both remember and cannot remember if you have done something. The state of being unsure if it is a false memory or a factual experience.

Schroedinger to Heisenberg; darn your uncertainty principle, I am having a quantum brain fart trying to remember if I did (or did not) put the cat in the box.

Quantum Brain Fart by Teraknor January 7, 2016

Brain Fart 

When you mean to do something really obvious but then you forget what you were doing and end up doing something something completely different. i.e, when you have a wrapper in one hand and food in the other, and throw away the food and try to eat the wrapper.

Brain Fart:
Person 1: Man, I had such a brain fart today.
Person 2: What did you do?
Person 1: I was holding food and a wrapper and threw away the food and tried to eat the wrapper.

Brain Fart by nv2001 February 8, 2015

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.

Brain Fart by David Peterle December 12, 2006

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!)

Brain Fart by GTOgirl July 13, 2009

brain-fart 

A total lack of recognition.
A silly mistake.
Can be stress related.

"I had a total brain-fart when she asked for my number."

brain-fart by Fish October 15, 2004