Don't be surprised if your high schoolers don't end up wanting them too. The high schooler that checked me out at Justice not long ago was wearing them. They seem to have hit all ages here.
Although alot of middle schools are banning them. Ours did. The boys were using them as sling shots for little paper balls.
Yep! I noticed the high school kids at church yesterday, and they all had them, even the boys. In fact, our babysitter collects them, and she's a senior in college!

I made a comment to a 5th grader that I had in 4th grade last year about them and she blushed and said, "You don't know what they mean do you?" Um, yeah I do. They think they are the first group of kids to invent these things. 