As I see the commercials below (which I've seen more than 1000 times on tv)... I can't lie and say they're not clever and funny. They actually are very entertaining.
But if you pay close attention "Planet Fitness" (a Gym)...it's making fun of people who work out and insinuate that they're all idiots. So basically they're message is, "come to our gym, it's okay to be fat"... Makes no sense.