Big brain

Extremely large brain. Usually named Lily.

Basically a person with a very large brain that has hella smart stuff.

Random dude: what’s 42+27?
Lily: 69 🧐
Random dude: damn you hella big brain

by Edjn October 24, 2019

Big Brain

Someone with massive intelligence. Usually the coolest person in the room

"That girl BB is hella smart man. BB must stand for Big Brain."

by Memegod5000 June 26, 2021

Big Brain

A big brain is a person who is stupid and yet smart with their stupidity.

Look! Jeff just pulled a big brain by jumping out of a three-story window to beat his sister down the stairs.

by Big Brain Joe May 21, 2021