This was a conversation that took place between myself and a few of the other extras while we were waiting to be called to the set. There was a clock on the wall near the bathrooms (toilets) that was stuck at 8.30. When someone said something about it, one of the guy said, "Oh that's where Einstein's theory of relativity comes into play. Time moves differently when you go to the bathroom."
My reply: "Well that's proof that Einstein stole the theory from his wife, because who else spends that much time in the bathroom?"