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(noun) short for "Electronic PEnis ENlargement".
Behavior quite commonly found on online discussion boards or similar, where some looser tries to establish his superiority - and thus the merit of his or her opinion - by stating how skilled and awesome he or she is, rather than forming a sound argument.
Generally also used to condescendingly refer to someones ego.
Looser: blah blah blah - and then I completed the game in one day. You are obviously inferior and should kiss the ground I walk on and accept my every word as a divine truth.
Rival: Don't pay any attention to the looser with the huge epeen!
epeen by tveon November 6, 2007
Equipment Potency EquivalencE Number.

Or just EPEEN. A joke made by Blizzard on April Fools 2010. Later made into an actual add-on you can use in-game. It measures your gear and displays your EPEEN bar above your characters head as well as measuring the surrounding character's EPEEN. The higher your EPEEN score is; the bigger the EPEEN bar is.
Your epeen is too low to whisper this character. As seen on one of the pictures on the World of Warcraft site.
epeen by ohemgeeitsyou April 5, 2010
electronic penis. when you zap somebody in an argument online, and they cant come up with a fitting comeback, everyone bows to the almighty might of your epenis. accentuates the fact that an online argument is like the special olympics, when you win youre still a retard.
squirly98: coldplay is for fags.
quilted711: come back when your balls drob.
squirly98: your epeen just grew 2 inches.
epeen by viciousk September 29, 2008
A misspelled portmanteau of "electronic" and "penis", the word originally stemmed from online games such as First-person Shooters (FPS) and Massive Multiplayer Online Role Playing Games (MMORPG), but is becoming increasingly common in other areas of the Internet. Epeen is suggestive of an Oedipus complex, whereby the individual struggles with their sexuality and real life environment, displacing all energy towards bettering their life in the virtual world.
Player 1: WHY CAN'T YOU GUYS KILL THE BLOOD GUARDS? ARE YOU FKING RETARDED?
Player 2: umadbro?
Player 3: i think he has an epeen
Player 1: WTF WTF PLAYER 2 HAS A FISHING POLE EQUIPPED!!
Player 2: umadbro? awww lil epeen needs a time out
Player 1: Fine, I admit it, I talk in caps angrily because my life sucks, I have a small penis, and my mother beats me.
Player 3: hahahahh
Player 2: hahahaahahahah good.
Epeen by dontcallmewhite June 15, 2011

epeen joust 

A battle of the epeen, often coinciding with a full clearing of Molten Core in World of Warcraft.
Tim: Its tuesday, time for a MC clearing.
Craig: I challenge you to an epeen joust!
Ban: Oh snap!
epeen joust by Nylith July 22, 2008

stroke that epeen 

Means stroke that penis. Usually used as a comeback to people who lie or talk shit, and it usually shuts them up. Is heavily used on COD/Halo boards/forums due to the amount of people who think they're pro but talk shit.
person1: hey i just got 35killstreak and got an achievement for reaching max level online.

person2: thats right stroke that epeen
stroke that epeen by Markwick October 21, 2009
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"Hey, see that chick over there? She's pretty enough to be an ulzzang. :D"
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