Pee pee and poo poo have a long, robust history in the annals of film, from shock films like “Last House on the Left” and “The Exorcist” to lowbrow comedies like “Caddyshack” and “American Pie.” Even Oscar movies “Shawshank Redemption” and “Slumdog Millionaire” feature main actors submerged in sewage. So grab your barf bag and suppress your gag reflex as Slate takes on the browns and yellows in the first of our two part series on Bodily Fluids with Pee and Poop in Cinema.