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. As you would expect there were all the regular types of moral stuff: Crying over spilled milk, pennies saved as pennies earned etc.
But then the teacher realized, much to her dismay, that she had missed Janie.
“Janie, do you have a story from your parents to share?”
She was a Marine pilot in Desert Storm, and her plane got hit. She had to bail out over enemy territory, and all she had was a flask of whiskey, a pistol, and a survival knife.
She drank the whiskey on the way down so the bottle wouldn’t break, and then her parachute landed her right in the middle of ten Iraqi troops.
She shot six of them with the pistol, until she ran out of bullets, killed three more with the knife, till the blade broke, and then she killed the last Iraqi with her bare hands.”
Good Heavens,” said the horrified teacher. “What did your daddy tell you was the moral to this story?”
“Stay away from Mommy when she’s been drinking.”