It wouldn't be the Dr. Oz show without at least one poop-related segment. Today we learned why we're all constipated. Dr. Oz invites a guest to stuff as much food as she can into a "virtual colon" (plastic tube).

I guess the idea here is to have a visual aid showing why we are all fat, constipated beasts, but mainly, the big payoff is that Dr. Oz gets to create a gigantic food disaster on stage.