I change my mind about things - for a while I was punk...

I change my mind about things - for a while I was punk rocker, and if you weren't a punk rocker you were an apostate. Then I was a dance music enthusiast, and if you weren't a dance music enthusiast, you were an apostate. I was carnivore, and if you were a vegan, I didn't want to talk to you. Then I was vegan, and if you were a carnivore I didn't want to talk to you.