Seems to me any song at all would do. If everyone was nude, why would it even matter any longer? You'd find this out quickly enough if everyone's clothes vanished. All of a sudden "nude" would not be "nude" any longer, it would simply be normal (meeting the norm), ordinary, unremarkable, prosaic, and not sexy in the least.

But I realize this is just a search for amusing song title possibilities...so carry on. ;-)