1 definition by The Busa

Brain Nut

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