Well, I'm definitely not a disco fan, but my handle came from a scene in "Stripes" (an all-time favorite with Bill Murray.)

In one scene, one of the characters (Judge Reinhold) is wearing dark glasses and a shirt that reads "Death Before Disco" (a take on the Marine slogan, "Death Before Dishonor".) That movie came out in '81, so it was a little more relevant then.

It cracks me up every time I watch it.