To burp while keeping you mouth closed, then tapping your sister on the shoulder and blowing it in her face.
She wouldn't change the channel, so I burped up some pizza and mooped her.
by W.E. Coyote August 20, 2003

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being extremely random and sexual almost homosexual during hyperactivity, with the exception of grabing ones breasts or penis
(or out of control)
"I was so moop today i walked up to a stranger and yanked on his crotch"

"that was my dad"
by ehna September 09, 2008

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The primary venue for communication for nerds or people with Asperger's Syndrome
When we greet each other, we say "moop" instead of hello.
by monkeypox September 16, 2007

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A completely random word used in the right situation.

Calls someone "Moopy". They are Moop-like.
The use of Mooping, Being able to Moop someone/thing.

Moop slips out your rear end; Fart.
Eg. Man you're a Moop!
Would you like some Moop?
I'm feeling a little bit Moopy....
Oops, i let a Moop slip out >.<
How many Moops you know roll like this?
by SoulDynasty / Richie September 21, 2006

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An unreliable person. Someone who shows up late, doesn't pay rent or repay loans, can't hold down a job for very long, etc. Your typical moop has tattoos, piercings, court-ordered child support, a substance abuse problem and a petty criminal record. One step up from a rubadub.
I thought tending bar would be a fun job, but I couldn't stand listening to the moops tell their stupid fishing stories all day!
by paperbackwriter July 10, 2008

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Noun, A person who is depressed. Emotional in a negative way all the time.

Gina- Hi matt...
Matt- Hiyas
Gina- Ughhh -_-
Matt- Your such a moop!
Gina- /cry
by ~Ineverknowsbest@hotmail December 18, 2007

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A derogatory slang term for people of the Mormon faith. The act of being a Mormon is refered to as mooping it up.
Mitt Romney is always mooping it up!
by stumpott August 15, 2007

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