We've been learning LUNIX in university, and we were on some workstation, fifteen people, and anyway, I aliased sudo make me a sandwich to rm -rf, globally, because obviously we have been given the root pass, right, and I knew that there are at least two xkcd fans among us and when they hear what sudo is they will finally get the joke and type sudo make me a sandwich and the previous sudo would have not timed out and they nuked the system.