by Dan Pope-Davis May 13, 2005

A one-hand grip maneuver performed on a scrotum; either your own (usually during the penis showing game), or someone else's (during oral sex, foreplay or cbt). The scrotum is grabbed near the base, squeezing until the skin is tight and the testicles beneath bulge out to form the appearance of left and right "lobes" of a brain.
by Phoenyx November 16, 2006

Any individual (male or female) who posesses an I.Q. greater than 170 who is completely absorbed by books, music, and other subjects not remotely related to sports. The opposite of a jock.
Co-worker: Hey, did you see the Eagles games last night?
Me: That's none of my concern; I'm not a jock, I'm a brain.
Me: That's none of my concern; I'm not a jock, I'm a brain.
by Michael B. Morton September 23, 2006

A part of the body we rely on for all feelings and emotions, knowledge and wisdom - and incidentally running the physical side of ourselves so we can enjoy wonderful things such as SEX!!
Her brain surgery was successful.
by The Mamma with the Quan December 13, 2007

That one organ in your body that can remember the lyrics to that one song you hate, but can't remember the answers for that science test.
by Grand Yee May 26, 2018

by Furyfreeze2005 October 30, 2017

by -Said no one ever May 11, 2022
