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12.
A promiscuous woman of questionable mental stability.
"She totally overreacted! What a complete psyc-ho!"
by James Atha February 23, 2008
 
1.
ultimately my mother
thumbs up if you know your momma's crazy
by panda August 23, 2004
 
2.
a deranged and/or psychopathic person who is a mentally ill or unstable person. also see psychopath.
psycho: "whoo hoo hoo hoo! im a fucking, mentally ill psycho!"
me: "you fucking sound like Tigger!"
psycho: "that's T-I double Guh Er!"
by like, dude! May 29, 2003
 
3.
N. One who displays violent or anti-social behavior, often attributed to mental instability or personality defect.
Jim is known as Sergeant Death because he's a total psycho.
by Naughtius Maximus May 08, 2005
 
4.
The ex boyfriend/girlfriend
"oh no! the psycho is knocking at my door! I told him it's over but he ain't gonna leave me alone!"
by refresh button July 10, 2008
 
5.
this lunatic who makes me write definitions about people.. Im kinda looney too so I guess i don't mind too much.
That vitale sure is a fucking psycho. I feel sorry anyone who comes into contact with that nutter. HA HA HA.
by Mikey Rehmyer December 27, 2007
 
6.
a) a psychotic, someone suffering from a from of psychosis
b) Alfred Hitchcock horror masterpeice psycho (1960) accredited with signifying the birth of the slasher movie
c)a psychobilly someone affiliated with psychobilly culture, fashion and music
a) he killed his mum, he must be a psycho
b) have you seen psycho, Norman Baites kills his mum
c) he killed his mum and has a flat top, he must be a psycho
by Tom Rowsell May 30, 2007
 
7.
me and all my other personalities
by Anonymous May 26, 2003