[A dot of violet light might glow in the witness box, and if he tracks it, he might spy a tall, pale man, sitting in the box, an e-cigarette in hand as he blows a plume of vapor into the air.]

That would be me... [He'll take another drag from the e-cigarette, looking around the courtroom before blowing out the vapor.] Are you come to prosecute me for my crimes? I might even plead guilty, knowing what I've found in my head. [He might reach up and tap his forehead with one long, graceful hand.]