Pour from a tiny can into someone's hand a pea, a corn kernel and a bean. Tell him to think of one and put all three back into the can. Place a cork into the can and proceed to magically guess which was chosen. Enjoy the surprise as you poor out a few drops of water, exclaiming "You were thinking of the Pea!"
Vintage Morrissey Midget Pea Can. NOT the Ickle Pickle version!