Is it normal to shake my eyes very fast?

I do it all the time. It's fun to be "blind"!

Yeah, I think it's normal :) I can do it with my eyes and control how fast they go :)

Yeah~I can do that. It happens to most people when they don't realise; e.g. on a train (because you can't focus on much as the train moves to fast)
I handful of people can control it and make it happen whenever~pretty neat

I can do it too! Feels awesome when it becomes clear again, like everything comes into focus again... mmmm

One of my friends is also good at vibrating her eyes. I think its funny.

My friend can shake her eyes hell fast, as in fast as the speed of lightning... Okay, not really but still very fast. It's normal. She taught my other friends how to do it as well and they actually caught on.

Mine shake really fast, but it's often when I'm really frustrated!