Oh, just tell them you installed it. When they ask you what you see on the screen, say, “OH MY GOD!! What have you done?? I see little falling green blocks and a guy laughing at me! I’m calling the cops — hang on the line so they can trace the call!” They’ll hang up before you finish that sentence.
I got one, once, for a car warranty extension. They asked what make my car was — I told them it was a Ferlinghetti. They asked if there were any lights on the dashboard. I told them, “Well, DUH. THOUSANDS of them. That’s kind of how you know it’s a genuine Ferlinghetti. Don’t you know anything about cars?”