IMM stands for the phrase "In my mouth."

Often used to make sexual references out of everyday conversation. Basically pointless, but can be hilarious when used sporadically and at the right moments.
Friend: He's sooo hot!
You: ..IMM

Friend: Just put it there!
You: ...IMM
by vanillabean001 April 09, 2010
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(a.k.a. Independent Movie Moment) a moment in time at which one feels like they are or should be in an independent film similar to the likes of, for example, Juno or Napoleon Dynamite. these are typically everyday situations in grocery stores, Rite-Aid, 24-hour stores, fast food drive-thrus, food courts, malls, and certain small towns, and either when you should be in school or late at night. crappy music is often in the background.

upon such a moment arising, you then declare "I.M.M." (pronounced simply as 'imm').
1. Standing at the ChillZone machine at Cumby's around midnight in a flannel shirt and with 79 pennies in your hand trying to decide what flavor to get. Crappy 80's music playing in background.

2. "Remember when we drove up to the window at McDonald's and our old principle was the one working there?"

"Yeah that was such an I.M.M."
by beenroundthefire December 06, 2009
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n. Short for immortal. Usually used in MUDs.
The fucking Imm whimped all my shit.
by Brian Alwrite November 17, 2003
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complete slag with few friends, often dyslexic, found on the street, drinking smoking & taking drugs. always has a bitch by her side who she practically licks and wont do anything she doesnt like. complete bitch and disgusting slag.
ye ye maytee did you see that dick'ed imm? she is a state man. drinking smoking drugs. her mum disowned her. she thinks she's well 'ard but shes insecure biatch.
by imm-is-gay July 06, 2009
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Involuntary Mouse Movement

The accidental movement or click of a computer mouse that usually affects another person.
(computer): Video call has just been started.
(computer): Video call has just ended.

Man 1: What the hell??

Man 2: Sorry bro, IMM.

Man 1: Alright man, cool (Y)
by Cory Lavery May 13, 2010
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