David: (upon seeing snot running down Moses' upper lip and into his mouth) Moses, do you need a tissue?
Moses: No, it OK. I have mine bwank-bwank.
David: Do you wipe your nose on the blanket?
David: Please don't wipe your nose on the blanket - that's why we have tissues.
Moses: (in a very consoling tone of voice) Ah. It's fine Daddy. I have mine bwank-bwank.