There is always a student or reason behind a rule. They wouldn't need to be enforced otherwise, would they? So, what's the story behind rule ninety-six: Students are not permitted to impersonate or imitate a member of staff?

There is always a student or reason behind a rule. They wouldn't need to be enforced otherwise, would they? So, what's the story behind rule ninety-six: Students are not permitted to impersonate or imitate a member of staff?