His father sends a small boy to bed. 

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....."

"WHAT?"

"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 a drink of water?"