Get their parents to tell them a story with a moral at the end of it. The next day the kids came back and one by one began to tell their stories.
"Johnny, do you have a story to share?"
"Yes, ma'am, my daddy told a story about my Uncle Bob. Uncle Bob was a pilot in Desert Storm and his plane was hit. He had to bail out over enemy territory and all he had was a small flask of whiskey, a pistol and a survival knife. He drank the whiskey on the way down so it would not break and then his parachute landed right in the middle of twenty enemy troops.
He shot fifteen of them with the gun until he ran out of bullets, killed four more with the knife, 'till the blade broke and then he killed the last Iraqi with his bare hands."
"Good heavens," said the horrified teacher, "What kind of moral did your daddy tell you from that horrible story?
"Stay the hell away from Uncle Bob when he's been drinking!