From the Super Mario Wiki
Force Feeding is one of Mona's microgames in WarioWare: Twisted! and returns as one of Wario's Twist League microgames in WarioWare Gold. The name is a play on the term "force feeding", where one person forces another to eat something.
The player controls an alien's face in WarioWare: Twisted! and Wario's face in WarioWare Gold. The objective of this game is to make a fruit fall into the alien's mouth. To do so, the player must pull the right clothespin if the fruit is seen in the right part of the screen or the left one if the fruit is falling on the left part. If done correctly, the player wins the game. If they miss just one fruit, they lose. The first is red, the second is yellow, and the third is blue.
Names in other languages