"Sorry Mrs. Lewis, I can't do todays equations due to my severe nut brain."
by boogerhooker November 12, 2017
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A male who thinks with his dick rather than his brain. Follows what his sexuality says to do instead of taking the path of common sense or intelligence.
"Can you believe John? That's the third girl he's screwed this week and he's SUPPOSED to be dating Stacy!"
"He must have nuts for brains."
by bottomofthebikini May 28, 2009
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When you and your homie are mentally and physically intimate and you both climax at the same time while your mental connections are in tune. Causing the ultimate climax of the mind and body.
Seeing Brandon Herrera & Eli brain nut together was the most beautiful thing I've ever seen.

I asked Baddie Streams if he would video him and Donut Operator brain nutting together for 500k and he said yes! The video was well worth it!
by UnsubscribePodcast September 14, 2022
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Where your brain expels it's cells IQ Count so your particularly Retarded on a certain amount of time (seconds, minutes, etc)
He is struggling with his work, he has a Brain Nut for today
I had a Brain Nut for a few seconds.
by PlsLaughAtThisName March 12, 2020
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1. When a hot piece of ass walks by, and your brain busts a nut

2. When someone mind fucks you with a concept, mathematical equation or riddle
1. Dude, checked that chick out, I just busted a brain nut

2. <hears concept> Whoa! Brain nut!
by The Busa November 3, 2018
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