Seriously.
I want someone who's not out of his/her mind (therefore, preferably someone I know in real life) to explain to me what the possible benefit is of a colonic. I think it sounds like a stupid idea that some asshole made up and got "healthy" people to buy into.
No thanks. I'd rather drown in a vat of peanut butter. And if you know how I feel about peanut butter, you'll be impressed.