Ah, yes, the colonoscopy is a consciousness raising experience for me. I do it without the anesthesia because I like to watch the inside tour on screen. Not terribly painful (at least for me), and in fact sans-anesthesia statistically reduces the risks of complications, and I can immediately drive home afterwards.
Youngsters, it’s the prerequisite digestive tract purging before the procedure that assails the consciousness the most, imo. Very, very unpleasant. Please beam me out of that part, Scotty.