Scene: someone’s cake has disappeared from the office fridge.
A: “Did you take my cake?”
B: “Why do you think it was me?”
A: “How do you explain the cream on your mouth?”
B: “Are you sure that is not toothpaste?”
A: “Do you usually put toothpaste on the corner of your mouth?”
B: “Have you never tried it?”
A: “Are you trying to make me forget about the cake?”
B: “Do you really think one cake is worth an interrogation?”
A: “Did you know it was my birthday cake?”
B: “Why didn’t you say that earlier?”
This kind of scene works because the stakes are tiny, the questions are easy, and the conversation can become ridiculous without becoming personal.