The Joker and Harley Quinn are popular Halloween costumes people dress up as but this year with the release of Joker: Folie À Deux on October 4, starring Joaquin Phoneix as the Joker and Lady ...

There will probably be thousands of Harley Quinns roaming around this ... "If you can work a pun into your Halloween costume and stick to your religious beliefs and dress up as something topical ...