(n.) A person with a quiet but nervous demeanor, that instills fear into people. Based on the charactor from the movie psycho. See also bates motel. Hello mother dear...
That guy creeps the shit out of me. I'm afraid to take a showerin case I get knifed to death and thrown in a river. Oh God he just looked at me again.

Where? What guy?

Norman bates in the red shirt, look at his eyes, they're evil.
by Gumba Gumba May 29, 2004

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Top Definition
A psycho. Someone with obsessive behavior or scary eyes
"That fucker's scaring me"
"Who"
"Norman bates over there"
by SteveDave May 09, 2003

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The act of going completely freaking out on someone.
Becca: "So did see that girl screaming at her boyfriend in the parking lot?"

Jake: "Yea, she totally went norman bates on his ass".

by cskillet January 15, 2009

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A character in the Psycho movie and book series, portrayed by the very sexy Anthony Perkins.
Anthony Perkins was so sexy as Norman Bates in "Psycho".
by Camnation January 01, 2007

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