I a theory why he calls it Naked Sunday.
He says "when all is over and we return to dust, who will be my judge and which one do i trust?"
He is referring judge to God. And when he says "which one do I trust," he talks about all the religions there are in the world.
(credits go to ArmyAnt for showing me this)
Well, Sunday, as we all know is a religious day for catholics, christians, and other religions. So maybe Naked Sunday criticizes religion and how they all go on Sunday. He wants a Sunday with no contradictions.
Thoughts?