Unless your weekend hobby is doing improv, you probably feel uneasy discussing your digestive system in polite company. We all love to eat, of course, but we don't care to think about what happens to that chicken chalupa once it disappears down the hatch. We impose a sort of "don't ask, don't tell" policy on our own digestive systems. This strategy works well enough, until your gallbladder refuses to stay mum or your gut decides to show a little insubordination. Then, suddenly, you want to know what's going on down there in the dark.