SHREDDERMAN is based on the book of that same title. The book was strange but amusing. The movie is utterly predictable and un-called for.
There is never any sex/nudity shown, but one female character, trying to attract the main character, tells him about several instances of nudity. Though after she says "I was naked" he walks away. The same character tells him that "having babies won't be a problem". It is implied that the school principal is having an affair with the bully's dad, and when they're planning to go on a trip and she shows him her two-piece bikini, he says "I'm glad you pack light." There are also several pratfalls, comic explosions, falling from trees, ect.
All in all, not a very good movie. Questionable content as well. If kids loved the book, you might talk about the numerous changes from book to movie. If not, keep away.