A small boy is sent to bed by his mother. Five minutes later, "Mom."

"What?"

"I'm thirsty. Can you bring me a glass of water?"

"No. You had your chance. Lights out."

[Five minutes later] "Mom."

"What?"

"I'm thirsty. Can I please have a glass of water?"

"I told you no! If you ask again, I'll have to spank you!"

[Five minutes later] "Mom!"

"WHAT?!"

"When you come in to spank me, can you bring me a glass of water?"