To fuck, to screw, to hassle. An expressive, lower-colloquial slang verb borrowed directly from the English verb “to fuck” and adapted with the Russian verbal suffix -ить. In contemporary youth jargon and street slang, it can function as a vulgar term for sexual intercourse, a synonym for giving someone a harsh scolding or hard time, or a way to describe messing something up. While edgy and informal, it often sounds less heavy or taboo to native speakers than the traditional obscene equivalents.
У него стояло как у жеребца, и он мог фачиться всю ночь.
He had an erection like a stallion and could fuck all night.
(Disgusting Little Creature @ ЖЖ, 03/2009)
