![dancing sharks katy perry](https://static-ssl.businessinsider.com/image/54cf9a496bb3f79a58b93c3c-1200-600/dancing-sharks-katy-perry-1.jpg)
AP Photo/David J. Phillip
Not because of the giant robotic tiger the singer rode onto the field atop, her popular shark backup dancers, or three costume changes - but because she literally had the moment tattooed on her body after the big show.
"I thought it would be appropriate to draw blood tonight," Perry captioned the below photo.