April Fool's idea

I'm supposed to post by 4pm this afternoon (a self-imposed deadline) the pre-final standings of my students in one of my classes and indicate as well who are exempted from taking the final exam this coming Thursday. It just came to me that I could post all their standings this morning--so many have been hanging around outside my office waiting for me to post--but show that they all got a failing grade as an April Fool's Day joke. Haha. Ah, my poor students ...