Mmmhm, that's how I normally sleep every night. I know it might look like I'm trying to break my neck, but honestly, I just find it rather comfortable, although I could live without a sore neck the next day.

To be honest, I don't know why, or how I started to sleep like that, it just...happened, I guess. I wouldn't recommend it though, not that I think there's a risk of anyone else trying it.