Epic Mickey 2: The Power of Two

When you arrive in OsTown after exiting the first D.E.C you will meet Autonomous Goofy and Gremlin Prescott, both offering solutions to the problem of the fountain in the middle of town spraying thinner everywhere. It doesn't matter who's method you use but once you complete this small challenge the well will dry up and the trophy will pop.

For the purposes of maintaining good relationships though and keeping count of your Unique Pins, go with Goofy's method.