Colonoscopy is done and dusted. I was first on the list, so into the suite by about 2pm, in recovery and asking for a sandwich half an hour later. Some parts were more than uncomfortable and into painful, mainly as the scope was navigated around the sigmoid, but I sucked hard on the entonox and really, I've had period pain that was worse and nobody gives me entonox for that. I got to watch the monitor as well, and can say with pride that my colon looks like the Sarlacc Pit. Biopsies were taken, but no abnormalities detected visually, it all looks healthy.
Disappointingly, no monster farts so far.