Widely known as "that-dude-who-killed-his-dad-and-slept-with-his-mom," Oedipus is one of the most famous people in all of Greek mythology. (Figures, right? All it takes to be mega-famous is to do something totally messed up.) The thing with Oedipus, though, is that he had no idea that he was doing anything wrong. His parents, King Laius and Queen Jocasta of Thebes, abandoned him at birth. Why? Because it was prophesied that he would do exactly what he eventually did. So when he killed Laius on a highway, he thought he was just defending himself against some random angry dude. And when he married Jocasta and became the King of Thebes, he thought it was just an awesome reward for saving Thebes from the Sphinx by solving her riddle. Talk about tough luck.