A boy was meeting his girlfriend's parents for the first time, and had been invited to dinner. After dinner, his girlfriend and her mother left the room to do the dishes, leaving him with the father and the dog, Rover, who was sitting underneath the boy's chair. Unfortunately, it had been a large dinner and the boy really had to fart. He stealthily let out a quiet, but audible, fart.
"Rover! Get out!" the father yelled.
"This is great!" the boy thought. "He thinks it's the dog farting!" So he let out another one, somewhat louder than the first.
"Rover! Get out from under that chair!" the father barked.
The boy was feeling more confident now that the dog was clearly getting the blame, so he let everything out at once in a really loud and smelly fart.
"Rover! For god's sake get out from under that chair before that bloody boy sh*ts on you!"