Refers to the way men think in regards to their lack of finesse and attention to detail in general; particularly, though, in socially sensitive ones. Much like using an ax instead of a scalpel to dissect, or a shotgun instead of a sniper riffle to shoot a target.
Anyone exemplifying the man-brain lacks the etiquette to handle delicate or intricate social situations as wells as critical thinking that requires consideration for all the problem's aspects.
Anyone exemplifying the man-brain lacks the etiquette to handle delicate or intricate social situations as wells as critical thinking that requires consideration for all the problem's aspects.
When a son tells his mother to move her feet so his girlfriend can sit in an effort to "act more like a gentleman" as the mother has been advising him to do. The son is showing a clear case of man-brain.
by borabora October 21, 2008
by demilovesyou April 12, 2009
That slut Jill is good in bed, but she's got cum-for-brains if she thinks that I'm going to marry her.
by ESB43 May 16, 2018
The feeling you get when you are having a lively discussion or listening to an engaging lecture and everything makes sense and it gives you a bunch of new ideas about the topic at hand. The intellectual equivalent of an erection.
DeSean: oh man, that lecture given by Dr. Kobilka about G protein-coupled receptor dynamics gave me a massive brain boner.
Derrick: uhh...right, yeah, totally dude. *pssst* Jimmy, I think we need to re-evaluate our friendship with DeSean...
Jimmy: agreed.
Derrick: uhh...right, yeah, totally dude. *pssst* Jimmy, I think we need to re-evaluate our friendship with DeSean...
Jimmy: agreed.
by Longrod Von Hugedong April 28, 2016
When you have a large problem, and you're stuck because you cannot figure out the answer. In which case the only thing to do is think about or preoccupy yourself with something else, and let your brain erection go limp so that you can go back to the problem in a fresh state of mind.
You: I've been working for hours and can't figure out this homework! It's too difficult, why would they give us something that's impossible to learn?
Friend: Dude chill out you just have a massive brain erection. It needs to go limp, just go play with your pet squirrel for a bit.
(Later)
You: Hey this homework makes sense now!
Friend: Dude chill out you just have a massive brain erection. It needs to go limp, just go play with your pet squirrel for a bit.
(Later)
You: Hey this homework makes sense now!
by roboticsnail August 06, 2011
by NBA Jam Rules Bro April 03, 2009
When a man squeezes his balls so that the scrotum bunches up slightly and takes on the appearance, shape, and texture of brains.
by Crabkilla2001 January 16, 2009