You know what's funny is that all these 'cleanse' things inevitably mention how John Wayne was autopsied and had a lot of undigested meat (pounds of it) in his large intestine. Sounded nasty and I knew someone who was parroting the same thing so I looked into it and it's an urban legend. I don't recommend doing the same thing as I ended up reading things you will want to scrub your eyes out with Clorox to forget.
It sucks to have such a thing associated with a man's man like John Wayne.
I heard Richard Gere still has an undigested Gerbil in his colon. Urban Legend or just a typical weekend for him?
The urban legend I've heard is John Wayne suffered from stomach cancer and ate most of his meals on the toilet.