Upside down name tag?

I remember a clip of a Simpsons episode (I don't actively watch it) where Marge interviewed somewhere, and the only real qualification for being hired was her commenting on the employee's name tag being upside down. Is this a technique interviewers use in real life? I know IRL it wouldn't be the one thing that makes you hired or not, but I actually remember telling my interviewer his name tag was upside down during my interview with my current job (it's my first one).