One morning, Pete and Sally decided to go out for breakfast. The waitress at The Almond Tree told them that the special that morning was two eggs, tomatoes, mushrooms, hash browns and toast for $3.99.
“That sounds good,” said Sally, “but I don’t want the eggs.”
“OK,” said the waitress, “but I will then have to charge you $4.50.”
“Why?” asked Pete, “it doesn’t make sense.”
“Because you will then in effect be ordering a la carte,” the waitress replied.
“Do you mean I’ll have to pay for not taking the eggs?” Sally asked.
“Yes,” replied the waitress.
“OK then, I’ll take the special,” says Sally.
“How do you want your eggs done?” asked the waitress.
“Raw and in the shell,” Sally replied.
At the end of the meal, Sally took the two eggs home.