On the set of High School Musical 3: Senior Year, the cast and crew finally get their revenge on prankster Zac Efron! High School Musical 3 hits theaters Oct 24th .\r \r \r \r \r \r Zac Efron did a crazy prank on the set of HSM3!! Söoo Funny!! :P Song @ the end: Love them like Jesus by Casting Crowns! God bless you in all that you do!\r \r Haha, prank on Ashley and Chris. Enjoy.