I'm going to be knocked out for mine. No way I'm going through that while awake.
I didn't like it, but it honestly wasn't that bad. I mean, you would get sharp pains when they turned a corner, it wasn't constant. It would feel normal, then every now and then, "Oww". The procedure didn't last that long.
But honestly, the worst part was the Picolax. It is nasty stuff. My symptoms lasted about three times longer than they said it would, until the following morning when I had to leave for the appointment. I was in a panic.
Thinking about it, the Picolax was for something else. I think I just used suppositories for the colonoscopy. I don't know why it's so hard for me to remember. I think I wasn't allowed to eat jelly (jello) for some reason when I took the Picolax.