Usually retarded people that thing their smart but their not. They usually have small brains and just say they have big brains to make themselves feel better.
by gamergurlbathwater420 November 18, 2019
Get the big brains mug.Jules: You know what they call a Quarter Pounder with cheese in France?
Brett : No.
Jules : A Royale with cheese! You know why they call it that?
Brett : Because of the metric system?
Jules : Check out the big brain on Brett! You're a smart motherfucker. That's right. The metric system.
Brett : No.
Jules : A Royale with cheese! You know why they call it that?
Brett : Because of the metric system?
Jules : Check out the big brain on Brett! You're a smart motherfucker. That's right. The metric system.
by dlicen August 10, 2022
Get the Big Brain mug.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
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