Does Katy Perry have a gross habit?

Katy Perry's legions of fans love the singer for her quirky style and girly meets tomboyish personality. But even die hard Katy Kats might be surprised to learn that the singer has a secret icky habit. " I used to pick my nose," Katy tells J-14. " I still pick my nose!" Even though this revelation will definitely gross out some people, Katy's totally fine with putting it all out there. "I was always a bit of a class clown," she says. "And I am okay with speaking my mind now!"