Toy Soldiers (1991)

A gang of rebellious teens must defend their boarding school from terrorists in Toy Soldiers (1991). Billy Tepper (Sean Astin) was kicked out of three different private schools before landing at The Regis School, where he becomes friends with Joey Trotta (Wil Wheaton), the delinquent son of a prominent Mafia don. And when a crazed gunman (Andrew Divoff) invades their campus and takes the entire student body hostage, Billy and Joey finally find a productive use for their troublemaking talents. This ain't no military academy, but Sean still manages to strip-search himself when he climbs out of a window naked at the 1-hour, 9-minute mark. These Toy Soldiers will have you playing with yourself!