15
The guy that brings in a knife to school and shows it under the table. He also tends to talk shit.
Me: Hey man where you been?
psycho: Joyridin' with my dad.
Me: Ya...haaaa....
psycho: Just shut it yeah or i'll gash your ears!!! Ahooheer arrr. Meh? Meh? and? sandpit..
by Definitor...unator. November 08, 2004
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16
1.another word to substitute intense or intensely because you say it so damn much

2.really.

3.someone who is not mentally stable and usually in most cases kills for a living.
your so psycho loosen up dude.

wow that boob job is psycho bad!

did you hear about that psycho on the news who killed all those people and hid them under his house?
by chaachit April 17, 2009
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17
us....i mean me...heh heh...
i have advanced delusionary schizophrenia with involuntary narsiccistic rage....yeah me too man
by ducky May 06, 2004
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18
An over-the-top psycho.
Andy's cousin Kim is a p-sy-cho.

Beth started screaming at me like a p-sy-cho.
by Psycho Beth November 30, 2011
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19
psycho is what happens when your boyfriend cheats on you
the definition on top of me is an example of a cheatin person with its results
by Anonymous April 07, 2003
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20
That guy at the party standing in the corner of the room pretending to be a hatstand. Or the guy you put your tent up next to at a music festival.
psst... over there. No eye contact. That one with foam dribbling over his chin... psycho.
by Bob Random August 27, 2003
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21
A member of the fandom of the tv show psych, which is unfortunately small.

Knows at least 20 Gus nicknames and endings of the phrase "Gus, don't be a..."

Usually ships either Shules, Shassie, Carlowe, or all three.
Psych-o: And then Lassie said-
Friend: Lassie? Like the dog?
Psych-o: you idiot.
by that_psycho August 10, 2013
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