unF

The paradigm of sexiness.

Sabu is fucking unF

unf unf

The sound of humping.

OMG, that chick is so hot! Unf! Unf!

unf unf unf

The universal noise of fucking.

Claire: I've been here the whole time.
Claire: unf unf unf

unf

Universal Noise of Fucking. See above definition for onomatopoeic use as a sound itself.

unf

A term used to express sexual desire

Unf that guy is so HOT!

Unf

Common word used on Tumblr when seeing a hot person.

hot.
UNF

unf

Universal noise of fucking. Also used to describe someone attractive.

Damn, Alex Gaskarth is so unf.