n. An intense rush of intellectual fervor or excitement in response to a stimulus such as recognizing a literary allusion in "The Simpsons" or finally understanding how to do that advanced calculus problem or even just anything really cool. Usually accompanied by inability to formulate actual words and an intense enthusiasm about the subject that induced the braingasm.
by Keri January 28, 2004
 Get the braingasmmug.
Get the braingasmmug. the pleasant, clearing, "orgasm-like" feeling your head and sinuses experience after a hearty sneeze.
by JenCheer January 30, 2009
 Get the braingasmmug.
Get the braingasmmug. (n) a subtle pleasure expressed when the brain is exposed to stimulating discussions. Such non-sexual pleasure, bonds the people taking part in it. This activity often occurs between Bibi and Chouchou.
by lalakis_stephanos May 28, 2019
 Get the braingasmmug.
Get the braingasmmug. by Casandraelf June 8, 2009
 Get the braingasmmug.
Get the braingasmmug. When you find out some unknown piece of information, and you feel a rush of Intellectual glee. Related to intellectual masturbation, and Brain Jizzing
by Seth-The-All-Powerfull June 1, 2010
 Get the Braingasmmug.
Get the Braingasmmug. An orgasm of the brain, something that would be the equivalent of information sex, something that would make a nerd smile in a kind of creepy, happy way.
Nerd 1: Dude, we just got our new Calculus books! 
Nerd 2: Alright! Braingasm!
Nerd 1: Yeah, we're so cool
Nerd 2: Alright! Braingasm!
Nerd 1: Yeah, we're so cool
by T pizzane March 25, 2009
 Get the Braingasmmug.
Get the Braingasmmug.  Get the braingasmicmug.
Get the braingasmicmug.