"Debris" was a euphemism. That's what you use if you a hesitant about saying someone was laying in a gutter covered with puke, cheap wine, and various kinds of filth. The word "Euphemism" comes from the Greek Ευφημισμός, which means "a more delicate way of saying something so that you don't offend the sensibilities of others or get a good poke in the nose."