A device used to measure or detect the presence of fupon particles.
The needle was buried on my fup-o-meter when I saw that chick's huge fup!
by Aeroh4x March 28, 2007
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Verb, To face palm someones own forehead, usually hard in a friendly matter.
Fup! I am gonna fup you so hard.
by memey memes October 12, 2019
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Fup stands for Fat Upper Pussy.
Her fup was bulging so far out she looked pregnant.
by SickMontanan October 05, 2015
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A stupid fat useless prick who is just is a dickhead. In Latin a dickhead majoris.
He is such a fup
by jackawesome1703 June 16, 2014
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Someone fat, ugly and poor
Some mean girl:Shut up susan, you fup!
Susan: what's that?
Some mean girl: fat ugly and poor
by rafa-kun December 07, 2017
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