The teacher  gave her year five class an assignment: 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. 
There were all the  regular types of stuff: spilled milk and pennies saved. But then the  teacher realised, much to her dismay, that only Janie was left.  
‘Janie, do you have a story to share?' 
''Yes miss. My  daddy told me a story about my mummy. She was a RAF pilot in Desert Storm, and her plane got hit. She had to bail out over enemy territory,  and all she had was a bottle 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 20 Iraqi  troops. She shot 15 of them with the pistol, until she ran out of bullets,  killed four 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  horrible story? 
“Don't fuck with Mommy when she's been  drinking."