America's foremost authority on juvenile titillation, Katy Perry, has a hot new music video for a song called "Firework." Can you guess what shoots out of her boobs this time?

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.

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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.

[There was a video here]

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.