Square cloud

The White Smile Block is a block found in World 4-5 of New Super Mario Bros. Wii; it is white and has a smile on its front. When activated, a Lakitu will appear and start to toss coins on the floor, which Mario and his company can then collect. However, there are also other Lakitus that throw Spinies present in the level, which the player can easily mistake for the coin-throwing Lakitu.