Why are people complaining? I'm not the biggest Katy fan but this song is, yes, silly, but that's what makes it good, same with the video, it's 8 minutes but it was so enchanting that it could have lasted 20 minutes and I'd still be nice, just like LFN's video, but, to me, slightly better because there was real people or ordinary events like a birthday party.
My only complaint is that I would have loved seeing her reveal herself on the Jewish party