mentally-challenged; retarded; needs psychologic help
that dude's mental because he fucked his own sister.
by mentallyyyy May 18, 2003
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the way you think, act, or feel about towards things.
person 1: man, he doesnt give a shit about anything.

person 2: yeah, i wish i had his mental.
by placentas February 5, 2017
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Usually one with a mental disorder.
Including anxiety disorders, personality disorders,eating disorders, and much more.
Usuaully used as "crazy"
Joe: That hannah in MENTAL!
Tom: what, does she have some eating disorder?
Joe:what? She's just flat out crazy..
by mabbymab December 13, 2009
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This phrase has commonly been misinterpreted as the complete opposite of its actual meaning. when someone asks "Are you mental?!" it means that they are asking if you ARE in fact mental and your brain is functioning PROPERLY. In todays society it has been disregarded as a phrase that implies being "mental" is a bad thing, when in fact being "mental" means your brain is working correctly.
John Madden: Are you MENTAL?!

Generic Football Player: Yes actually, I am!
by Davins_Kitchen December 1, 2013
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Wen someone can’t think correctly or is plain out ignorant. Wen people say they are mental, it means that they are being stupid on purpose or not on purpose
Newton: awqofwkfn
Caitlin: Ur kinda being mental rn
by Kaytlin Savoie March 12, 2019
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Derives from the adjective temperamental: a person used to sudden changes in mood.
Because Americans can't spell, the word has been shortened to the last two syllables, but everybody has forgotten about the original spelling. That's why shortening words is always a bad idea.
"Hey, that guy down there is so temperamental."
"Is he what? Speak English, man."
"I said he is TEMPERAMENTAL."
"Oh yeah, he is mental all right!"
by Antidogma September 17, 2011
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