Often believed, by those who don't understand the term's origin, to be spelt (or spelled, for the American audience) 'sike'.

Deriving from the word psychology, psych is a term used to indicate that whatever the person speaking just said was done so purely to mess with the listener's mind, to 'psych' them out, if you will.

A term used to reference cannabis/marijuana/weed.

To retract your previous statement, in an attempt to fool the person you're talking/chatting to. Also see sike.

A TV show about a guy named Shawn who fakes being a psychic (he has a near perfect memory) to avoid going to jail and ends up working as the Santa Barbara police station psychic.

Characters:
Shawn
Gus
Jules
Lassitor (Lassie)

cool, dank, sweet, shiznit, da bomb

The newest nad coolest show on the USA network..it follows the life of Shawn Spencer(James Roday) and his friend Gus(Dule Hill)as they solve murder cases for the Santa Barbra Police Department. Shawn has a photographic memory to help him thanks to his father Henery Spencer(Corben Bernsen) who is an ex cop and tried to force Shawn to grow up and become a detective. Shawn is pretty lazy and too interested in having fun and dating hot chicks to go thru the long process of being a cop detective so he uses his PG memory a a fake "Psycic" pretending to get preminnisions and having the ability to communicate with the dead.
other characters incude: Carlton Lassiter(tim omendsun),Julliet O'Herra(maggie Lawson) and Keren Vick(kristen nelson)
see www.usanetwork.com/psych or go to google.com and type in the word psych.

A slang term used to defame a person after they have been persuaded to believe a false truth.

The modern "Mindfuck" could be considered to convey similar meaning, as "Psych" may be interpreted as "psychologically fucking" with a person.