Diarrhea!

So today, I am chatting away on the phone with a woman regarding what type of signage she would like to effectively promote her business.  

As we were chatting I decided to make an appointment for the owner to meet with her on site and go over her plans & take measurements, photos, etc.  As I go to set a time later that day she kindly informs me that she is suffering a severe case of diarrhea and can't possibly meet today. WTF?

Is there an age where it becomes acceptable behavior to tell a stranger that you have diarrhea. And what exactly is an appropriate response to this news.  Sorry you have the shits today, Monday work better for you?  

If your sitting in a park & you feel a sudden spark, diarrhoea.

When your on the seat for hours and it doesn't smell like flowers, diarrhea, diarrhea!