If not check out this nifty Howcast video tutorial.
Actually I think this brilliant. The video promises a great trick. It seems legit, as lines like "Most magic stores have these" make it feel well researched by Howcast. Then the execution is so bloody awful with no convincers, no setup, no payoff... that all you feel is utter disappointment. Suddenly you don't wanna know anymore magic secrets. We need more of these.