1. a message that is sent over an online messaging service

2. the act of sending or receiving a message over an internet service
1. I sent an IM to Tommy to tell him about the party.

2. Eugene IM'ed me to tell me about his lame party.
by metman85 October 30, 2005
its short for instant message.
do u have AIM (aol instant messenger) if u do why not I.M. me
by Bug March 09, 2004
i m
Short for "immature." To be used when you don't want to say the word "immature" because saying the word itself when refering to someone is in itself immature.
Am I going out with that girl from the bar again tonight? Hell no son, she was way i m. Only like 21 or some shit.
by Chris B dot April 12, 2007
it Simply means imOut.!
As in Peace Out or Goodbye
Yeah iHad ahGood time.. TTYL.. I.M
by OCQ.Syditty August 06, 2009
A way of insulting an idiot, by sarcastically claiming to be them. Simply say "I'm.." and then say their name.
Jacob: *farts on a cute girl*
Tony: I'm jacob.
by thegreat_1 December 03, 2010
meaning "istant message", when someone gets an account from a "instant message" company, and add's your screename, and talks to you when theyre bored

*****:hebrew means drugs, i IMmed you

by fljsjflsxfs March 03, 2006
A program where no-life teens sit two feet from eachother to talk through their computers.
holy hell anna, your sitting two feet from Illiana just stand up and talk like normal people!!!!(IM)
by asdfghjkl;;' March 03, 2006
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