Characters
I thought I told you to wear a suit in my courtroom!
— Judge ‧ My Cousin Vinny

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
An exasperated scolding from someone in charge, insisting on proper dress in a formal setting. It's funny because of how simple and stern the complaint is, delivered as if the speaker had clearly issued the instruction and was let down.
Context reviewed