I put the corner in a really Factory Sealed bottle and asked a lunch lady at my school who was restocking the vending machines to put the bottle in with the others, and I promised to buy it quickly, etc. But I did the trick up until the vanish, acted like it was over, and said I was really thirsty, bought the water, and asked someone to open the bottle.
I won't go into huge detail, but it was one of the best reactions I've ever gotten.
I won't go into huge detail, but it was one of the best reactions I've ever gotten.