A term that means to murder someone, and dump the body as to not get caught (referring specifically to Scott Peterson).
Tom: Hey man, have you seen Tracy today?
Bob: Nah man, she went out on a date with some guy she met on the internet night before last and no one has seen her since.
Tom: Damn! I hope that dude didn't pull a Peterson!

or

"Man that guy is such a dick, if he doesn't watch it I am gonna Peterson his ass and that it'll be that".
by BillyBones da real McCoy June 30, 2006
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A combination of the words "pet" and "person."
Hilton: Hey, check out my sweet pet monkey.
Ken: Monkeys are kind of like people.
Hilton: So I have a pet person?
Ken: Yes. A peterson.
by Hilton S. May 9, 2006
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A "closeted" pretentious male, often quick to anger and generally found desperately trying to improve his self image, despite the fact that he's a hipster douchebag, complete with obscure musical references, black-framed glasses, and a fixed-gear bike.
"Did you see that tool hipster that just ran by?"

"Yeah, he's a total Peterson."
by Dr. Rosenbaumstein August 31, 2011
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A unit of measurement of 77 1/4 inches in length created by V. (Pete) Peterson on January 12,2010. He is 77 1/4 inches in heigth.
I am 1 Peterson in length. Which means I am 77 1/4 inches long.
by ark_chic2010 January 13, 2010
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A term used to describe someone children who have down-syndrome. With the tendency to latch on to somebody emotionally and lashing out against anyone who competes with them for attention.
Matt: Do you guys know WTF is wrong with Kyle?
Zach: I have no clue he just needs to stop being hostile to everyone besides Shane!
Shane: Well to be fair he is a Peterson
by POOSY 4 HAMMY October 1, 2011
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A person who gives you half credit on work you turn in one day late becasue you were absent.

A teacher who gives you an average of 2.3 worksheets a day

A teacher who makes you read a random WWII book

A hardcore gamer, who can beat Mazzie in Halo 3

Sucks at dancing

YYYYOOOOOOOO!!!!!
Wow, thats so much homework, stop being such a Peterson.
by clayton Merritt March 9, 2009
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A last name common among inbreed people.
He must be a Peterson,(under breathe) fuckin inbreed
by Cockerdo Don October 14, 2017
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