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lower brain

The penis (as opposed to the upper, real brain, which is located in your skull). Used as a metaphor for male sexual urges. "Thinking with your lower brain" is the act of discarding all logic and sense (apparently the job of the upper brain) in order to gain the affection of/have sex with the opposite sex.
Horatio: Sure, Clarissa, I'll go skinny-dipping in highly-concentrated sulphuric acid with you this weekend.
Algernon: Stop thinking with your lower brain, Horatio.
by Nobodyiscalledhoratio January 25, 2006
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Mommy Brain

The phenomenon known to mothers where their brains become useless piles of goo after being around their children for too long.
I can't remember how old I am! Total case of mommy brain.
by LisaS January 3, 2008
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Related Words

Eating One's Brain

Said of an individual, circumstance or location perceived as insidiously annoying. Usually one discerns the circumstance after a brief period of interaction with said annoyance.

From direct translation of the Hebrew saying popular in Israel.
Eating One's Brain example:

Last time we were there, the guy was eating my brain.

Let us go, this place starts to eat my brain.
by Tiger What Woods January 15, 2014
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Brain Fart

What's that honey? Our anniversary date? Sorry, I think I'm having a brain fart!
by Henry Harmison August 4, 2008
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brain glitch

A temporary spacing out, or lapse in judgement where one makes an error in thought or analysis.
He answered much more difficult trivia questions, but when asked the answer to 9 squared, he had a brain glitch.
by Raoul_16 July 21, 2008
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brain tree

"You know that girl Claire?"
"Yeah, she's a total brain tree"
by demilovesyou April 11, 2009
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Man-brain

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.
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 February 25, 2009
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