Lady Gaga called into On Air with Ryan Seacrest on Thursday to chat about the crazy week she's having, from headlining the Super Bowl Halftime show to preparing to duet with Metallica at the Grammys. The "Million Reasons" revealed the secrets behind the Halftime performance, explained why she clapped back at Internet bullies on Instagram, and shared the inspiration behind her brand new video for "John Wayne." On her Super Bowl Halftime show performance: I watched, I think, almost every si