There were two days in my colonoscopy prep where I needed to eat stuff that I rarely eat anymore: white flour, sugar, no fiber, bananas, pasta, rice (mmmm, it was yummy). Those days were kind of fun. Sunday, the day before my procedure, was not fun at all.
Liquids all day and starting at 4 pm drink 8 oz of lemonade (mixed with a bottle of miralax) every 15 minutes for an hour and a half. Not fun.
The next morning starting at 4:30 am, I drank the remainder of my pitcher of lemonade—every 15 minutes for another hour and a half. It does the job.
Chris dropped me off and went to find a quiet place to work for a couple of hours. More unfun stuff? An IV. But at least they knock you out for the procedure!