I had this dream, that looked very very real. I was sitting in a classroom and my teacher asked me something. I started calling him names and throwing chairs. A few minutes later I was outside and I realised that I'm very nice and never do that kind of stuff . So I did a reality check, but it failed and the dream continued. What was this? Normally they never fail.

btw, I'm not crazy, my dreams are just cool. They do things that I want to do in RL, but simply can't.