Because it is integrated into the media. So much more is allowed on tv and in movies than it used to be. As an adult watching children's movies there are so many sexual jokes and references it makes me uncomfortable. Not to mention what gets shown on tv that children are allowed to watch. It's only natural for these kids to mimic what they see and hear in the media. I'm not saying parents should be overprotective of their children and not let them watch anything, but they should definitely screen things before letting their children watch them.