Someone who uses Facebook for plans that does not seem normal to a person who is sane and free of mental illnesses.
The psycho sent me a friend invite on facebook and I never even seen them in my whole life. Crazy bitch if you tell me.
by IsawUonMEGANSlaw.com April 17, 2010
by Sabronna February 15, 2016
N. One who displays violent or anti-social behavior, often attributed to mental instability or personality defect.
by Naughtius Maximus May 08, 2005
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!"
me: "you fucking sound like Tigger!"
psycho: "that's T-I double Guh Er!"
by like, dude! May 29, 2003
by refresh button July 11, 2008