I often talk in my sleep and say weird things, and usually wake myself up. When I was a kid, I would just yell "NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO" for like an hour and my mom would come and wake me up and I wouldn't remember anything.
When my friend was 9, he was in a really bad boat accident and nearly had both his arms cut off by the boat propellers, and my most recent bad dream was that I was sitting on the edge of a boat and then it got wavy and I fell in and I was being sucked towards the propellers. It was semi - lucid for I consciously was breathing and I knew that if I yelled I would wake myself up. So I screamed bloody murder and woke up and scared the shit out of my boyfriend.