I see you walking down the street every night. You turn the corner, there's a streetlamp there, you turn right past it. One night, I go to see you. I see the letter you're holding. The light of the streetlamp makes the envelope look yellow. "Who's it from, who's it sent to? I think I should know, since you betrayed us." I say. "None of your business." You mutter, a bit nervously. You turn the corner and walk away. "What are you hiding, Traitor?" I whisper.