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A unique word that can be used as any part of speech. Because the word, "mep," is short and cacophonous, it can be easily used to describe practically anything that is annoying, anyone who is overly-excited, as well as anything that is in the process of being annoying/bothersome. The word's sheer hideousness (and ease of being vocalized), has made it a go-to when one wants to describe anything generally irritating, and can be synonymous with the words "loser", "ugly", "stupid" and "annoying."
"She is actually excited for the physics final, what a mep."

"Those clothes she bought at the mall are so mep, only an idiot with no fashion sense would wear them."

"She's probably so meppy because the only people she socializes with are fellow meps."

"We were all meppin' it yesterday, we wore ugly clothes and exuded an aura of insipidity."
by The Return of Tituba May 03, 2013
an awesome sound that two people make to communicate back and forth, while hopping up and down with arms that look like a little bunny
They made mep noises that echoed through the school, while hopping around like a little bunny.
by mepmepmep November 09, 2012
a short and sweet word used just for pleasure. it can be used when you are tired, bored, excited, when you dont have a good come-back, or even when your getting laid...
passenger: "there is a sharp turn up ahead"
driver: "mep!"

hott girl: "just put it here"
horny boy: "mep!"

bully: "yeah well your momma is stupid!"
dork: "oh mep, foo!"
by windtalker of the aborigines April 17, 2005
a word that expresses displease or not-goodness. mep can be used as a noun, adjective, basically anything that can show displeasure
After Karen drove over a bump in the road she said, "Mep," but then later denied it.
"I don't like what the mep is going on here."
"I got mepped at the used car lot."
"Ah, mep the meppin meppers."
by MC Nutreal July 06, 2006
taken from a cartoon with odd todd which is the only word this strange create on the discovery channel uses
well recent me and y freinds have used it in a sort of confused sort of reponce
by paddy the god of slang April 18, 2004
A word which people use when they don't know what to say.
Boy: Do you wanna go out?
Girl: Mep.
by MEpMEpMepPoo May 17, 2008
other word for no, or nope, or shut down.
that guy just got mepped by her
by michael February 21, 2005