Bird brain

A simple phrase that means that something is really dumb.

Aw damn, Melissa got a bird brain

by SlipNdip_69 March 29, 2020

Raisin Brain

A very impaired brain, shrunk and deformed - like a grape withered by the sun, forming a raisin.

They always wondered what was wrong with Chad, he always seemed dumber than a piece of toast. "Perhaps he has a raisin brain?" Julie offered. "My cousin had raisin brain." George said. "Couldn't tell his ass from his face." Chad continued to stare at them in confused silence.

by Bmckeat June 3, 2021

exam brain

When you're so busy and consumed with school, exams and studying that you forget, confuse or aren't able to remember the rest of your schedule.

You must have exam brain.

by S Black December 15, 2013

Brain-sane

The action of pulling the foreskin of the penis back so the bellend is visible

He just did the brain-sane!

by Jackson Sullivan October 11, 2023

kook brain

Someone or something acting stupid or doing something dumb

Marko-"Your kook brain to the max"

Nathan-"are u kook brain?"

by straightoutofseattle May 2, 2014

puff brain

A person whose thinking is so ignorant that it is worth nothing but the puffs of hot air coming out of his/her mouth; a person who utters an exceptionally misinformed or uninformed opinion.

Denny was always going on about his knowledge of nuclear physics, even though he failed high school Physics. He is such a puff brain!

by Cynical Bob March 30, 2020

BB Brain

A fuckin idiot.

He's such a bb brain he failed an IQ test.

by julesk April 17, 2019