Unf

Common word used on Tumblr when seeing a hot person.

hot.
UNF

by hookerific August 23, 2011

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Unf

Same as, "blown". Origin: The sound a guy makes when he cums.

"Unf, I have that paper due in two hours and I haven't even started."

by Awesomenesssss213 March 05, 2012

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Unf

A virginal, completely stupid onomatopoeia that teenage girls use to show that they are dry masturbating through their pants to photos of hot men online, mainly on Oh No They Didn't!.
Girls, if you find him truly hot, use the word SHLICK instead, it's sexier.

UNF he's hot

by 207shawdy March 06, 2009

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Unf

unf·
.v. unf, unfed,
To hump in excitment; to make weird facial expression.

1. can she.. hell ya... shes a great unf
2. unf on baby! unf on!
3. but you unfed
4. whos unf'n
5. keep on unfin' in the freeeeeee woooorld

Synonyms: Boh!, Fuck, Hump

by Mike & Sarah July 09, 2006

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