What's your favourite song lyrics of katy Perry?

My Избранное song will always be "Thinking Of You" and I know the words by heart...

My Избранное line goes...

"You're like an Indian Summer in the middle of a Winter, like a hard candy, with a surprise center"

My favorate song by her is firework and my favorate lryics are
Do Ты ever feel like a plastic bag drifting through the wind wanting to start again?