Universal Noise of Fucking. See above definition for onomatopoeic use as a sound itself.
by Video Warrior Laserion December 14, 2002
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Universal noise of fucking. Also used to describe someone attractive.
Damn, Alex Gaskarth is so unf.
by wtfamisupposedtoputhere? October 23, 2011
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The profound noise and/or actions of having wild sex.
by Caitlin April 6, 2003
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the united negro fund

a fund for negroes that unite
i gave to the unf the other day, 20 dolla
i was watchin' white chicks and they referenced the unf
by gretchen69me December 30, 2011
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unidentified nocturnal fornication
unf was heard from the dark trees behind my house...unf unf...i was scared
by fireball4u January 5, 2005
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