Magician displays an empty black can with white spots, a black silk and a white silk. The two silks are placed into the can and after several comedy bits about the silks changing color..and when the audience is thoroughly convinced that the magician is pulling their leg...the magician passes his hand over the can, wiping off all the spots. He tosses the spots into the can and removes the two silks, which are found to have the spots all over them.
