you aren't silly. In a way it is fascinating because with it is like that, it probably has sediment that goes with it, so you are expelling the junk from your body, which is a good thing.
I think that people that fast learn things about their body and how it works much better then people that don't. Fasting really helps you get in tune with your body and know it better in a deep level, so that you can provide the right things such as foods and water and allow your body to work as it should like a well oiled machine.