Have You Cleaned Your Colon Today?

"Excuse me miss...Has anyone ever told you to get your colon cleaned?" This is the type of thing I'm bombarded with when I'm just minding my business on the subway. Unfortunately, (for the salesman) I told him that no one had ever told me this wise knowledge. I also explained to him that I (along with others maybe?) might not feel that comfortable divulging into our daily bowel movements with other people...Much less a complete and total stranger. Wow, you gotta love the city.