Apparently that was unacceptable conversation here. A live show of the Aristocrats would be okay, but no condiment conversation.
People who put mustard on their burgers are a step below car salesman and one step above a cockroach.
Never in a million years but I'm from Queens. In the '70s I was in rural Connecticut and got a couple McD burgers. I was revolted, not just by the mustard but the fact that IT WAS SLAPPED RIGHT ON TOP OF THE CATSUP, resulting in a disgusting blend resembling vomit. Since I've been in the south and southwest I've found that they do that everywhere BUT New York. Most people I know here are surprised when I order my burgers dry.