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10.
To power your way through a difficult situation by sheer strength of mind and bull-headedness.
When you're in deep doo-doo, you've just gotta mental your way through it.
by Nome de plume May 07, 2008
 
1.
when something is absolutely insane, or just down right gnar.
That barrel was straight up mental
by Jote September 28, 2005
 
2.
meaning someone who is silly or stupid, usually for attention and in a random or sporadic way, involving nonsensical references and actions. usually violent or quick action involved, resulting in general amusement and hilarity of onlookers.
"hey look, archie's jumping off that cliff while holding a banana!"

"wow! he's mental!"
by arto October 11, 2005
 
3.
mentally-challenged; retarded; needs psychologic help
that dude's mental because he fucked his own sister.
by mentallyyyy May 17, 2003
 
4.
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
 
5.
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 01, 2013
 
6.
1) (acronym)Mental Entities Needing Total Attention Lodge

2) Created for the website that later adopted the word "M.E.N.T.A.L"

3) Old piece of furniture, usually a sofa, that goes around eating people

see Bentrix for other words related to this company
1) "i found a cool website..."

2) "hey...look, another cool website, called M.E.N.T.A.L, i wonder why?"

3) "OMG this early piece of victiorian furniture is trying to bite my leg off!"
by Ben Waugh August 10, 2004
 
7.
Mildly Entertaining Non Threatining Attutiude Loss
Dude, it was so funny to see Linda going m.e.n.t.a.l at that party!

Pete went straight m.e.n.t.a.l when he found his girl in bed with that chick!
by graphitebull September 02, 2004