Katy Perry knows how to make good(?), for lack of a better word, music with popular elements to ensure a hit. A pinch of humor and the bizarre per usual. It's incredibly pretentious as well.
Video sucks. Lamer music with better videos have debuted.
Go listen to the music - forget watching the video. Let the music make the visuals for you.
"When they hear this jam, they can't sit still."