To paraphrase an old quote, Halloween is the one day of the year where we all get to dress and and for that one day pretend we're someone we're not. Actually, the quote is from "It's A Wonderful Life" and was talking about people being nicer to others for Christmas, but I think my version works too. Except if you're a cosplayer... or you spend a lot of time in Las Vegas or Akihabara.