I don't eat eggs. Years ago, I stopped to have breakfast in a small restaurant in a rural area. I asked for "Sausage, hash-browns and toast".....which was the same as the #4 breakfast, except that #4 came with 'one egg'. The price for #4 was about $2. The waitress said my order would cost $2.50, as it was ala carte
I asked, "You mean you are going to charge me 50¢ to not cook an egg?"
I was so nonplussed I didn't even think of just ordering #4 with a hard-fried egg, and leaving it on the plate.