Abbreviation for "dick in your mouth". Sometimes used as a quick way of smiting your enemies. Has other incarnations such as dimm - dick in my mouth, diya - dick in your ass, etc etc.

Came into use in an IRC chat room and quickly took off from there.
<Person S> Hi there!
<Person A> Hi!
<Person S> DIYM!
<Person A> :|
Eggulocity가 작성 2004년 08월 31일 (화)

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Top Definition
Swedish Writer
Diym was bombin and terrorizin the jam like troops in Pakistan
Mads Ecks가 작성 2010년 06월 13일 (일)

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D- dick

I- in
Y-your

M- mouth
Brittney Spears,"5+5= 11."
Micheal Jordan," You fucking dummy, are you dumb it is 10."
Britteny Spears," Oh shit it is."
Micheal Jordan,"DIYM."
LAjay14가 작성 2011년 07월 05일 (화)

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This abbreveation for "Dick in your mouth", is also used as a word to replace damn in sentences to people you have no respect for, but maintaining it's "dick in ya mouth" meaning.

Contrary to the chat room deffinition, this term was developed by a friend and myself over fifteen years ago, as a way to fuck with a guy at work who we had named "Dicknyamouf". Example. "Hey dicknyamouf, bring me a soda!"
"Diym nigga you gonna smoke the whole shit or what?"
Dj Puck가 작성 2004년 10월 13일 (수)

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