Local Diner WTF?

The roads are pretty clear, but I didn't want to travel too far for lunch today, so I settled on the usually mediocre but fairly expensive Airport Diner.  It's only real virtue is the proximity to my office.  I also had a hankering for a Philly cheesesteak, which is pretty standard diner fare.

So, while I'm sitting and waiting for my order, I watch my waiter having a ferocious conversation/argument with the manager.  After much pointing - to me, to the dessert case and back at me again, the manager walks over and very tentatively asks -


"Did I really order cheese cake with mushrooms and onions?"

Apparently my waiter (young and American) was both stupid and hard of hearing, because he insisted that I said cheese cake, not cheesesteak.  In fact, I said "Philly cheesesteak."

The manager looked quite relieved, but I actually felt a little nauseous.  I think I came about this {} close to getting a slice of Junior's best covered in mushrooms and onions.