This is what I would do. Create a new method to your trick, and make it IMPOSSIBLY hard. Like you know those rube-goldberg mechines we all had to make at school way back in the day? Accomplishing a simple(not calling your effect simple, just using this as an example) task in a long, drawn out way? Then, give him this new, impossibly hard method, and if he can pull it off, then kudos to him. And if he does, laugh in his face, and tell him it's not the real method, just something you gave him to shut him up. That's a little harsh, but I hate youtube exposers with a passion.