'Hey Mom, we should have a Harry Potter triathlon!' What? 'It's going to rain all day. You know what you always say about rainy days?!' Um, it's good sleeping weather? 'Nnnnnooooo (laughing). It's a good day for a movie triathlon.' Oh sweetie, I think you're mixing up your athletic events. It's a good day for a Harry Potter MARATHON! 'Yeah, a marathon. That's it! I wonder what a Harry Potter 5k is? Maybe just one movie...' Will Bosworth.