The first American film to show a toilet being flushed on screen was Alfred Hitchcock’s Psycho. Do you remember the movie? Surely you’ve seen it. I think just the name of the movie puts shivers up and down people’s backs today. And raise your hand my friends – how many of you shower with the bathroom door shut and locked still? You know.. just in case someone gets into your house while showering. Admit it. We don’t judge here.