1 definition by BigBrainManiac

Top Definition
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
by BigBrainManiac September 17, 2019

Mug icon
Buy a Big Brain mug!