A penis that is so incredibly small that it can only be seen with a microscope.
No girls will give a blowjob to Brian Roth because of his Millimeter Mosnster.

:Not even Chelsea.
by Matt May 18, 2004
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A millimeter miracle is the name given to a penis that is small. You could use this as an insult if you are in a penis size insult war.
Jimmy : "You have a one inch wonder"

Steve : " Well, you have a millimeter miracle"
by JellyBeanz March 7, 2015
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When you think too much about your attractive teacher or Donald Trump and get a massive eSHREKtionwhen you have 3 minutes of class left and can't find a solution.
Mom-hey Danny what did you do today?
Danny-got a 44 millimeter.
Mom-oh...."calls an orphanage.
by simple man trump April 3, 2016
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The use of a firearm, such as a 9mm pistol, to solve major people problems via homicide or suicide.
The retired cop choose the 9 millimeter solution, when his doctors told him he had incurable, painful cancer.
by I, Wreckerrr July 24, 2019
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ABSOLUTE ANAL DESTROYER

THE CORRECT DEFINITION OF SEX
I HAVE A 3 MILLIMETER DEFEATER
Are you lost baby gooorl. I can give you this 3 millimeter defeater
by Traitor on your mom May 17, 2021
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a person who has the smallest dick ever, and thinks that their dick is the biggest when it's a millimeter.
Yo he got dat 1 millimeter defeater!! his dick is the smallest one in the team
by 4 fo 4 September 30, 2021
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