Perhaps this is the downside to my decision to offer variety in his meals: he now believes the diaper bag is his personal equivalent to Mary Poppins' carpet bag, endlessly filled with his favorite things. All he must do is keep asking, and it will magically appear from the depths of the Magic Bag.
Once he stopped crying over the hamburger, he asked me for ice cream.
No, no ice cream in the diaper bag either. But that would be cool. I'm with him on that one.