Has anyone used one of those head massaging things?

I'm just seeing if I'm the only one in the world who has one of these things. Yep, you've never seen it...But yeah you guys HAVE to get one of these. Making it go through your head is like an orgasm. It has this weird tickly tingly feeling, it's hard to explain. I'm serious. You must try it. It felt so good when I first used one the other day that I'm making a topic about it.