Ula: Daddy, can I have a balloon?
Bob: I just gave you a balloon.
Ula: But can I have another balloon?
Bob: No, I already gave you a balloon.
Ula: Yes, but I need another balloon.
Bob: For Pete’s sake, Ula. What do you need another balloon for?
Ula: I just need another balloon.
Bob: How many balloons do I have to give you to satisfy you?
Ula: I just need another balloon.
Bob: You can’t USE more than one balloon at a time.
Ula: Daddy, please? Can I have another balloon, PLEASE?
Bob: You know what? Fine. Here. Take the bag of balloons. You’ll see. You can only use one balloon at a time.

Fat lot Bob knows about balloons.