BrainFuck 

When you forget your best friends name for a second

Shit 'Whats his name again? Im brainfucked...'

BrainFuck by McFaggotshit March 15, 2015

Brainfull

Brainfull (verb) Smart, intelligent.

To succeed, you must be brainfull.

Brainfull by Armageddon7432 July 15, 2022

Brainfuck 

The German language.

Paul is learning Brainfuck. Either he is a masochist or he has way too much free time on his hands.

Brainfuck by bboy December 28, 2018

brainflakes

A moment of genius & creativity

Meditation via brainflakes is sure to make you 😊

brainflakes by All Lives Matter November 25, 2020

brainfu 

Mental Kung Fu. Disciplines, practices or processes that give rise to cognitive or creative agility.

Listening to ambient noise generators (such as the 'rain on a tent' or 'vocal drone' on MyNoise.net) enhances my brainfu.

brainfu by Wombats on Ponies August 8, 2021

BrainFallOutitis 

A serious condition in which one's brain falls directly out of their skull, resulting in instant death and messy carpets. The primary cause is a deficit of squeezing the butts of petite females. As of this time there is no known cure, despite efforts to attempt using an ice cream scoop to plop the brains back into the skull.

"Man it sure is a shame that Trevor died of BrainFallOutitis. If only he'd had a butt to squeeze."

BrainFallOutitis by DefinitelyARealDoctor August 21, 2021

Brainfuckery 

Also see Mindfuckery. Something that gives you a Mind Screw moment, i.e. something extremely confusing or disturbing.

YTer: "Finally I get to escape this brainfuckery!" (That brainfuckery being Patrick's Parabox)

Brainfuckery by PLMMJ December 8, 2023