1. obviously correct so much so that no further consideration is required to find out whether it is correct.
2. (of a girl) not allowing oral sex.
1. The student gave a no-brain answer.
2. Do you like no-brain girls?
by uttam maharjan November 13, 2010
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No matter who it is from A blow job is a blow job
Mike " I don't know whether to go out with her"
joe "Brain is Brain"
by Sugar Dad January 17, 2017
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when you moon someone, its the part of the sac you can see from the back.
Shit, Dave just mooned us and showed some brains.
by D day November 9, 2003
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Brain-Verb:
when one puts their two fists together, forming something resembling a brain and then proceeds to insert said brain into an orifice (i.e. vagina, anus, nose, mouth. basically it is fisting x2
dude, she's so gaped i brained her last night, it was absolutely disgusting
by Terabad February 8, 2009
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When braining someone; you pull down your pants and squeeze your nuts away from your dick to make it look like a brain.
Tony was going to brain Manny at the soccer feild.
by Milinhos November 4, 2007
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A term for methamphetamine used by the particularly addicted and strung out when seeking their next fix. Mostly used by those addicts that are so far along they are missing several teeth, have a pale complexion, are covered in sores and lack sufficient cognitive ability to think about much else than getting more to feed their hunger.
Strung out meth addict: Brains!

Sane person: You are likely to find more fulfillment by seeking out other...

Strung out meth addict: BRAINS!!!!!
by l0ner September 16, 2011
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Word used to describe a highly annoying per who knows everthing, or rather thinks they know everything. Will even dispute what a person of higher knowledge is saying
Sally: The sky is blue

Helen: I think you will actually find it's red, thats a fact

John: Typical of The Brain...
by John6690 January 31, 2008
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