Top Definition
A meaningless expression used by furrys who can't or won't decide on a word to express the emotional state.

A furry "meh" basicly.
Fox: So how was your day?
Skunk: Marf
by Mr Yin January 05, 2009

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An acronym, short for "Modifications and Additions to Reactor Facilities." It is the name of a prototype reactor plant run by the U.S. Navy and the Department of Energy, located in upstate New York. It is a disastrous cluster-fuck of a Destroyer's engine room (surface ship's steam plant) and a S5W/S7G primary plant (fast-attack submarine's reactor plant), which results in nothing making any sense at all, and everything breaking constantly. According to a rumor I just heard, a large primary-to-secondary leak recently occurred and the plant is going to be shut down forever.

Also means, "Make another round, fucker!" and is said to someone who's sitting around, on watch, not using their time the way they're supposed to (bullshitting, not paying attention to equipment/machinery).
Person A: What plant are you in? S8G?
Person B: MARF :(
Person A: *shivers* I'm sorry man.
by Sarpedon June 19, 2006

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The sound sheep make when they know we arent looking.
Also a nonsensical word that has no real meaning.
"Marf Marf"
"What was that???"
by Decontrol December 04, 2006

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the name for a person who has the connective tissue dissorder marfan syndrome.
I miss my marfs from the conference
by marfgirl December 05, 2009

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A small amount of regurgitated stomach contents (barf), that is not thrown up with much force. The contents only make it as far as your mouth. The "m" for mouth is substituted for the "b" in barf, hence marf. Usually you don't know it's coming and it is commonly simultaneous with a burp or hiccup. Can be used as a verb or a noun.
Neal: Uhhh, i just barfed in my mouth.
Peter: Ya, marf tastes pretty fucking gross.
by mgchnds September 14, 2011

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The famous Arseish word 'marf' is commonly used by BadAsses of the United Badgers Association. Meaning "sex" or "fuck", it can be used in a variety of sentences. Other words find it's root in 'marf', such as 'marfut', marfer, 'ubermarfer' and 'merf'. Please use accordingly.
Oi Badgerstaff! Fancy a marf?
by Alex K. August 19, 2003

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A man scarf
Hey dude, that marf looks really great with your outfit.
by tkay14 January 13, 2013

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