I was sitting at the New Years dinner as a knight of king Arthur's court. All of a sudden a green knight on a green horse rides in. He insults the knights of Camelot and then challenges us. Who ever strikes him with the axe must let him strike him back. King Arthur accepted but I decided I should go instead. I chopped his head off. He picked it up introduced himself and rode off telling me where I could find him in a year.