Weird Science (1994)

S4E24 Pirates!

Wyatt lands the starring role in the school musical, "Jolly Roger," and he's smitten with his co-star, Jessica, who sadly doesn't feel the same way. Lisa attempts to change Jessica's mind, but her magic goes haywire, bringing the musical to life. Suddenly, the high school is overrun with singing pirates and their captive, Principal Scampi. They even crown a new king, Chett. Before long, the pirates escape from the school aboard their ship, taking their energetic singing and dancing out into the town.