I get that a lot. I also get the Alice in wonderland symptoms. Always thought I was a major weirdo for that. Sometimes my feet look like they are mile away. Then other times I feel like I'm only 3 ft tall. Also get exploding brain syndrome. Sounds bizarre I know. What it is ..is right when you're falling asleep you hear a really loud bang like someone shot off a canon right beside your ear. I read an article in Psychology today about it and they say it's not that uncommon so I don't feel like such a freak. The human brain is such a strange and wonderful thing.