Lunch at Harvey's with Nicholas

Me: There are four types of kids meals, Nicky. Do you want a hamburger, cheeseburger, chicken fingers, or a hot dog?
Nicholas: A hamburger.
Me: A hamburger? Not a cheeseburger?
Nicholas: No, a hamburger.
Me: OK. Are you sure you don't want a cheeseburger? Just a hamburger?
Nicholas: Yes, I want a hamburger.
Me: OK.

A few minutes later...
Me: OK Nicky, here's your hamburger. What do you want on it? Ketchup? Mustard?
Nicholas: No, just cheese.