A: Why are you using crutches? B: Can you keep a secret? A: Of course I can! What happened? B: I sprained my ankle yesterday. A: What were you doing? B: It's kind of a secret. A: Why is it a secret? B: I'm a spy, and if I tell you, I'll get in trouble. A: Do you really expect me to believe that?! B: Alright, I'll be serious this time. A: Good. What really happened? B: I got hurt during my ninja training.