There are certain areas of human life that should just be private, and I'd put bathroom time at number one. Or, uh, number two. If someone wants to knock your door down, do like this guy does and hold your ground. After all, this is our real-world Game Of Thrones.
Without a crazy person chopping at your door with an ax, how are you supposed to pass the time in the restroom? Without -- gasp -- a cell phone? Honestly, you should resign yourself to going mad and becoming a bathroom-Brando-in-Apocalypse-Now-style hermit because you've lost what it means to be a human.