Furfag (also known as Furry Fag) is a demeaning term used by Nonfurs and Anti-furries to describe a member of the furry community and/or as a condescending way to "acknowledge" a fur's "presence" during online discussions. Also used between Nonfurs and Anti-furries as an "ultimate insult."
Even though the term contains in it the word "fag" (a derogatory term for "homosexual,") it is not usually intended to imply anything about the target's own sexuality.
Be with with one of your furfag friends. They LOVE dicks AND assholes! <3.