brainbox 

Slang term for skull. A simplistic, yet wholly accurate account of the skull and its function, i.e. a container for one's brain.

Referring to a headache: "Man, I've got so much pain in my brainbox right now, I don't think an Advil's gonna cut it."

brainbox by Rumer November 30, 2009

brain orgasim 

When you're illiterate and you don't know how to spell Brain Orgasm

Timmy tried to define 'brain orgasim'... he didn't know he spelled it incorrectly. Ironic because it has the word Brain in it, inferring thought and logic.

brain orgasim by ClickerMonkey July 22, 2010

Brain Aneurysm 

What happens to you when you try to translate the New Zealand national anthem.

Don't listen to that! You will get a brain aneurysm

Brain Aneurysm by The slayer 18 June 19, 2017

boil brained 

So dumb of a person you deserve to eat pigs ass

Exzaiver failed the test so bad it seemed like he was boil brained

boil brained by Sir knight October 25, 2018

brain(s) 

n. scrotum
due to the folds of skin on the scrotum that resemble folds of gray matter

Friends television show, with a man going commando and "showing brain"

brain(s) by Blade April 27, 2004

brainsenburn 

An awesome runescape player that owns pretty much everyone with a few exceptions.

Brainsenburn owns Zezima

brainsenburn by akuma128 March 4, 2009

Brainspaz 

A moment where you lose sanity and say random crap (especially online)

George: Sarah, you looked totally hot in that pic
Sarah: OMG George, WTF?
George: Sorreh, Brainspaz.

Brainspaz by TheMrKjsC March 20, 2011