A fellow magician at school was explaining to me how to do a card routine, but neither of us had any cards on us at the time, so he mimed it to me whilst explaining (miming made the trick easier to follow than if he'd tried to explain it using just words). The trick involves the magician putting the deck behind his back. As he had the imaginary deck cupped in his hands behind his back, someone else who was walking by at the time, said, "I can see what you're doing!" I mentioned that the guy wasn't actually doing a trick, and questioned his reason for trying to reveal a trick that wasn't even happening. He just walked off. I hate jerks like that - people who like the idea of exposing tricks to the public for the sake of making the magician look bad.
yeah well they are probably just jelous or something.. i hate that too