Big-brain 

Big-brain, (Which can also be spelled without a hyphen,) means smart, intelligent, and is usually used when someone says something witty in an argument.

Maddie is really big-brain for saying that!
Or
Maddie is really bigbrain for saying that!

Big-brain by ~Chrysanthemum~ December 2, 2020

Big brain 

A term to describe the most intelectual of individuals.

I have big brain

Big brain by rubythekitten19 August 6, 2019

Big brain 

When you do something smart for once in your life. overcome a problem with a good solution

*he punched thorugh his computer screen so they can't check his search history*Big Brain

Big brain by Beepers Boop November 9, 2019

Big brain 

When somebody says something smart or comes up with a good idea.

You use use the term big brain to agree, be sarcastic, or let the person know that they have a good point.

John: “ instead of buying one Small Arizona for 1 dollar you could get two big ones for 2 dollars”

Bill: Big brain

Big brain by Symbols December 17, 2021

Big Brain 

A time when an idea or an analogy is used tactically.

He plays minecraft instead of fortnite he is big brained

Big Brain by InkSwarm Nation YT October 27, 2019

Big Brain 

Something that is said when someone tries to sound smart (and is usually wrong).

Person 1: Dude you should go to space without a helmet. There's oxygen, you just can't see it!
Person 2: bruh
Person 1: No really it's true!
Person 2: Yeah, this is big brain time

Big Brain by BigBrainManiac September 17, 2019

Big Brain 

U is very smart

Oh yeah, this big brain time.

Big Brain by Yeet23456 May 11, 2020