Whack-a-Boy is basically Whack-a-Mole, but instead of moles, you have to whack Booth Boys. If a Booth Boy pops out of a hole, click the mouse button to swing your hammer. There's also a curtain that slowly closes and a face with eyes that follow the mouse in the background, if the curtains close completely the minigame ends. The current max amount of tickets you can get are 10.
In this Minigame, you have 35 seconds. Booth Boys & Girls spawns sometimes random, whack as many as you can. However, in a few seconds, they will speed up to disappear. After 0 Seconds, then you will obtain some tickets depending on how well you played.