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Millimeter Mosnster

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 17, 2004
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Millimeter Monster

Everyone has a millimeter monster until puberty.

I heard that guy got dumped because of his millimeter monster.
by JAC7272 April 28, 2014
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