Brought to you by FanDuel: There are some crazy football fans out there! These are the best of the NFL fans who dress up for game day. Whether you're looking for fanatical Cheeseheads, stories from the Black Hole, or Eagles fans who just scream "MURICA," you will see some of the best costumes ever worn on the gridiron.If you thought men don't like makeup, you are sooo wrong. These football fanatics have taken their fandom up a notch (or seven). Which cities have the best sports fans? Which teams' fans are the most insane? What are the weirdest outfits people wear on NFL gameday? You'll soon see that men and women alike treat every Sunday during football season like it's Halloween and the results are AMAZING.