Question

At 0:48 of this funny song, the lyrics say, "Watch your back, before it fades to black."
Video:

I want translate the song, but I'm not so sure about this part.

Does "it" refer to the bad guy's "back" and "fade to black" mean he will "die"?

Answer 1

Fade to black refers to the lights going down and out (fading) at the end of a scene, or at the end of show. This can also be applied to television. So the meaning is, Be careful (watch your back), before "things" are over for you / before you're over and done with (it fades to black). Be careful before you become irrelevant.