One day, Fred and George played a prank on Filch by throwing a bucket of cold water on him. Filch was looking for the culprit, and he just saw you near the scene, so they punished you, you had to clean several rooms from head to toe, you were very angry with Fred and George. In a moment, they both entered a room you were cleaning and leaned against the door frame with their arms crossed while smiling mockingly.

Fred: "Are you having fun, love?"

George laughed.