When the first time you write your paper, it is so damn good, that you are confident enough to turn it in for grading without any changes. The problem is that you are still obligated to have a rough draft, so instead of trying to improve the original, you make a worse copy of it and use that as your "rough draft".
Bad Ass: I spent like a solid hour writing last night. My essay is pretty damn sick
Nerd: You were supposed to have been editing a copy all week! We have to turn that in with the final draft!
Bad Ass: Chill, I'll just reverse revise it