Indie is the stereotype for people who belong to no stereotype. There is indie music, and there are indie films and designers. Some artists that would most likely be considered indie are Pinback, Andrew Bird, Nick Drake, Sufjan Stevens, Clap Your Hands Say Yeah, etc. A lot of people say that an indie kid can't actually say that they are an indie kid, because that is accepting a label and indie kids are against labels. Personally, I'm really into independent music and films, and I was before it was classified as "indie", so I proclaim myself to be an indie kid. It's nice to have people ask what indie is. And otherwise people seem to think I am either emo or goth.
Me: I watched Manic last night, that movie is so amazing. Zooey Deschanel did a great job.
Other Kid: What is Manic? I've never heard of it.
Me: Well, you wouldn't have. It's an indie movie.