Power Washer is a 1-vs-3 minigame which appears in Mario Party DS.
Gameplay[]
The team of three are standing on a dish, while the solo character operates a water sprayer to try and spray them off. Any team member sprayed off the dish gets eliminated from the minigame. A second water sprayer is activated shortly before time runs out. If at least one team member is on the dish when the 30-second time limit expires, the team wins, but if all three characters are sprayed off the dish, the solo character wins.