It means, Hell Yeah, Fucking Right. It comes from Drake's kit song, HYFR. Most commonly used on Facebook and Twitter, this abbreviation has just recently become known. Mostly used by wanna-be gansters and thugs.
Ayy brah, d'you see that hottie at the beach yesterday?!
Stands for "Hell Ya Fucking right" One of Drakes song "HYFR" Take Care'
Girl: Do you love this shit? Are you high right now? Do you ever get nervous? Are you single? I heard you fucked your girl, is it true? You getting money? You think them niggas you with is with you?