MTV recently went backstage with Katy Perry before her show at London's O2 Empire Club and things got a little weird.
The video piece shows Perry toying with fans before the gig, doing a provocative stretch while walking down a flight of stairs, and talking about throwing up right before she goes on.
The oddest moment had to be when she gave out the juicy details of her preshow ritual: drinking a tall Coca-Cola with a fresh Tylenol. Apparently singers frown upon taking in caffeine before a gig, but Katy swears by it. I personally feel it just makes her act like a hyper little chipmunk.