A type of funk metal that is harder/darker than Red Hot Chili Peppers, but funkier/sexier than System Of A Down or Slipknot.
The abbreviation implies that it's an actual genre, as opposed to using the full name "erotic death funk", which is more often used as hyperbole in reviews. Thus it is more commonly applied to bands or entire albums rather than individual songs/collaborations.
Most EDF bands actually play different genres on different songs and it's the combination that makes them "EDF". "You'll Be A Hot Dancer" by Incubus is an example of this within a single song.
-Yeah, dat whole disc is 13 tracks of pure EDF!