This is the most petty thing we've ever heard, but it's hilarious.
Actor Henry Cavill, best known for portraying Superman, was not allowed to shave his mustache while filming Justice League -- apparently because he was working on a film for Paramount at the same time, which required him to have one.
This means that Warner Brothers had to spend MILLIONS of dollars to digitally remove the damn thing. Scroll down to see the awkward and hysterical screenshots. LOL!