brain cripple 

an individual who is crippled in the brain.

you're a fucking brain cripple

brain cripple by stu,alex&amy October 10, 2006

brain up 

To think; to use one's brain; to accept the challenge to think;to wise up.

You invited your two ex-girlfriends to your party? Come on, man, brain up! What were you thinking?

brain up by Player Monroe May 13, 2008

Brain Matter 

When you take loose scrotum skin and bunch it in your hand. The result resembles a soft brainy tissue.

Sabe's took his scrot skin and made brain matter of it, which he then played with for several hours.

Brain Matter by Dill Nut October 3, 2008

cambridge brain 

(noun) Large, veiny testicles inadvertently shown. Similar to a large brain as may be possessed by somebody studying at Cambridge

Excuse me vicar, but do you realise your cambridge brain is poking out of your cassock?

cambridge brain by Pete Watkins September 3, 2006

Thin Brain 

(Noun)Derogatory name for a man with a small penis. Used after one shows their small penis at a party or gathering.

John was dared to streak across the bar. I don't know if it was just cold or if he was a thin brain.

Thin Brain by Nubb'n December 17, 2008

Small Brained 

When someone is a fucking idiot they are a small brain.

Mike "Yo I charged off the map trying to get the transing zen."

Jane "LMAOOOO you are so small brained nerd lol."

Small Brained by SMall BRained February 21, 2019

ass for brain

it describes somebody who thinks and talks from their ass

dude talk out of your mouth you stupid ass for brain

ass for brain by jumping tree October 28, 2007