A small boy

A small boy is sent to bed by his father. Five minutes later: "Da-ad..." "What?" "I'm thirsty. Can you bring me a drink of water?" "No. You had your chance. Lights out." Five minutes later: "Da-aaaad..." "I'm THIRSTY. Can I have a drink of water??" "I told you NO! If you ask again, I'll have to spank you!!" Five minutes later... "Daaaa-aaaad..." "WHAT??!!" "When you come in to spank me, can you bring me a drink of water?"