Milking minigame
From Summertime Saga Wiki
Description
The milking minigame is available in Diane's and Daisy's routes, after the barn is built, and if your relationship with the partner is established. It can be replayed but makes the time of day pass.
How to play
Press A and D, or tap on left and right sides of the screen. Press each side, in an alternating pattern, until the milk reachs beyond the purple lines and both machines are full. You cannot fill one side at a time and the minigame fails if you press one breast too often.
Reward
The benefit ranges from $100 to $200, the gain varying according to the pregnancy status of the person milked.