I had a spontaneous pneumothorax a couple times in highschool, so I ended up having a lung surgery to prevent them when I was 18. To this day my mom refuses to reveal the things I said to her while I was in recovery, and the following days when I was on Demerol. It drives me crazy because there is a lot I could have said, did I mention I was 18? I know she's probably doing me a favor, but it seems unfair.
I've since wondered if I have a big mouth when I'm dosed because that's who I really am underneath my impulse control, or if that's how everyone is.