Alfred Hitchcock's 'Psycho' is famous for its shower scene, but it also broke a major Hollywood taboo that had lasted for decades: showing a toilet. Under the Hays Code, toilets were considered 'indecent' and were never shown in bathrooms on screen. Hitchcock insisted on showing a toilet and hearing it flush because it was a vital plot point—the character Marion Crane tries to flush away a piece of torn-up paper. To get the scene past the censors, Hitchcock had to film it in a way that focused on the paper rather than the toilet itself. The 'toilet flush' became a symbol of the crumbling censorship era, proving that audiences could handle seeing the realistic, everyday details of life without being corrupted.