Looking for a collection of short stories that take place in the future of earth. I can't be certain on the publish date as I read it in the late nineties, but I have the feeling it was published earlier than that.
Here are some of the stories I remember:
1) Story where some teenage girls ate some sort of snack thing that was free, but it caused them to gain weight, and there was a convenient weight loss place next door ran by the same people that cost.
2) Story where rock 'n' roll was banned, and a kid joined some sort of street gang. I just remember the end where the dad revealed he was into it as well and was a big fan of Bruce Springsteen.
3) Story where kids could wear extra ears where they could hear better, and products/items would often say things, but they had to get rid of them when they grew up.
