Smile

The smile is an item that appears in the Item Shop in Wario Land 4. Unlike the other items, which are there to assist the player in defeating a boss and cost a certain amount of medals, the smile is free, but is essentially a joke item. "Buying" the item only results is a smile from the shop owner; a sound effect also plays each time the player selects it.

The smile is a reference to the Japanese menu, in which the charge of a smile is 0 yen.