That's right, fireworks! (Gaga-esque?) They also shoot out of a little boy's chest and the belly of a woman giving birth. Katy Perry's boobs: Circles of life.
Lest you forget, the last time we saw something shooting out of Katy Perry's tits, it was whipped cream in her "California Gurls" music video.
Why is Katy so obsessed with shooting stuff out of her boobs? Is it a metaphor for her career, which soared to great heights with the help of her springboard breasts? Or maybe she has mommy issues. Or maybe she just likes attention.