From the Super Mario Wiki
Ladies' Man is a downloadable microgame in WarioWare: D.I.Y. and WarioWare: D.I.Y. Showcase. It was released on October 28, 2009 in Japan, September 27, 2010 in North America, and October 29, 2010 in Europe.
At the start of the game, three aliens are sitting next to a lady. One of the aliens wants to give the lady a sundae, and then does. Then all three aliens get up and start walking around. The player has to tap the alien that did it.