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The sound or text used to annoy, to get someones attention.
When someone is not online, you send them constant messages with the word "meep"

When sneaking up behing someone and poking them with a loud "MEEP"
by nemolover February 22, 2011
'It's meepalicous"
by Aurora876 December 01, 2013
A random word; Julia SparkleFountain's word on Wizard101 and Twitter
Julia SparkleFountain: Meep
by SparkleFountain October 27, 2013
Meep is the great word that defines everything it used in conversations

Ninja-"meep meep "
Ninja 2-"are you serious"

or even when you have nothing to say
Ninja-"why did you kill him"
Samurai 4-"um... meep"

there is a secret organization for all meepers or meeplings even the foretold meepees
the art of meep is very sacred that it ain't just one art it is martial arts, music and art art

it can change every sentence you make and very thing you do

it is a cube with a 'are you serious' face and penguin arms and shoes
"May the meep be with you"
"Who meeped on the table"
"What the MEEP!"
by batmansuncle September 09, 2013
A word used to refer to a person who is incredibly plain and/or hard to look at. Derived from the noise the sardines on "Spongebob Squarepants" made when they overtook the Crusty Crab (or anytime a sardine comes into the shot); they all looked the same, and were very unpleasant to look at compared to other characters.
While surfing through someone's facebook pictures:

Person 1: Jesus! Have you seen the picture of ___s' baby/kid?

Person 2: Not lately, why?

Person 1: the kid's a fucking meep. Poor thing...
by Texas_punk08 May 17, 2013
when you're at lost for words or are stuck in a sticky/awkward situation.
Boy:So you want to go out sometime?
by bootyliciousjj October 14, 2010
In stories he wrote in the 1920s and 1930s, H. P. Lovecraft used the word meep to represent the vocalizations made by ghouls. Lovecraftian ghouls were subterranean humans that had degenerated into dog-like cannibalistic creatures.
A man he had known in Boston ... had actually made friends with the ghouls and had taught him to understand the simpler part of their disgusting meeping and glibbering." ~ in "The Dream Quest of Unknown Kadath"
by Jersey Muse July 05, 2010