When someone sends you a fucked up pornographic image over a text message.

Combination of brain, anal, sex, and text.

It is essentially a mind-fuck over a text message.
Steve: Yo, chris did you get that brainal sext i sent your daughter???
Chris Hansen: Yes, I've been meaning to talk to you about that... why don't you take a seat...
by armadilloracer March 9, 2010
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When you find someone incredibly intellectually stimulating and you want them to penetrate your mind further or you wish to penetrate theirs.

Completely intellectual attraction, without physical or emotional attraction. A desire to be mentally close to someone.
The opposite of to wanting to pick your brain ie wanting to have your brain picked
"I met this guy the other day, he's not my type, but the converation is amazing, he really understands me... It's like we were having brainal penetration."
by Moo Lavaca October 26, 2010
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The part of the human body which controls all functions.
Responsible for all logical and creative processes.
Is often used synonymously for common sense.
Next time you better use your brainal region before you do something stupid like that.
by SoccerKim December 3, 2010
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When a guy sticks his penis into his sexual partners ear.
by jimmy and jack September 28, 2006
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Studying intensely for long periods of time (especially with a looming deadline or under threat of a teacher/parent/boss), resulting in a temporary but severe decline in mental ability.
"I had to study 10 hours a day for a week and I still barely passed the test. I should report my teacher for Brainal Rape."
by HamstoreWrangler June 1, 2022
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"The act of penetrating deep subjects of intellectual curiosity with a partner, resulting in mental stimulation, and often physical-emotional attraction" (@Matthew Hussey)
Charlie: I never want to be afraid to try new things. You know, I heard once that life begins when your comfort zone ends. So maybe the bass can be the foundation for my whole new life. I mean, no pun intended.
Jane: ... *silence* (has just been brainally stimulated and she liked it)
by peppy_heppy July 17, 2017
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