Also, it's really dangerous to publicly announce this kind of trolling. Let me explain:
You tell everybody that you're going to send Phil an empty game case, for shits and giggles. Then someone else, who's a complete mental case, decides to send him something dangerous inside an empty case. Now, when the police gets involved, guess what will happen? They'll see your public post talking about sending Phil an empty game case. Now you're fucked, even if you're completely innocent.
Maybe I could pitch this for a CSI: Kahndo or Law & Order: Gout Victims Unit spinnof. But the point remains: do not publicly announce your trolling plans, it will ruin everything.