Little Johnny (for the oldsters)

Little Johnny's teacher gave the class an assignment to come to school the next day with a War Story to tell. As each of the students told their stories they all had a familiar ring of a movie they had watched. Finally it was little Johnny's turn. He told the story of his brother who was in Viet Nam. Little Johnny said that while his brother was in Viet Nam he got shot in the ass. The teacher goes'whoa Johnny, don't say ass, say rectum'. Little Johnny said 'rectum shit, it killed him!'