A red spot card and a black spot card are removed from the deck, shown openly, and placed face down on a spectator’s palms. The performer appears to remove something from the black card – and audible “click” is heard. Then that invisible “something” is pressed against the back of the red card and an audible “squeak” is heard. The red card is turned face up and there is a black pip among the red pips. The black card is turned face up and…a pip is missing.
It’s cute! It’s clever! They’ll swear it happens right in their hands!