You only busk when it's Xmas

T. Aldous is giving Daisy Duck a hard time for letting two library assistants from the same library have the same day off. No matter that the staff covering the absence will both have worked there recently, know what they're doing and are extremely capable. No matter that long-standing vacancies mean that you can't predict where any two members of staff anywhere in the Borough will be three days running. Oh no. As T. Aldous explained:

"What would happen if it were Christmas? You need to think before you act."