If you remember this movie, you understand the horrors. If not, let me just say this: the movie involves a haunted mansion, a creepy art teacher, kidnapped children forced to make paintbrushes, and a scene that involves pubic hair that won't stop growing. I have vivid memories of the film from my childhood, including a scene where a bald boy's wig is torn off mid-soccer game, much to the amusement of his fellow players, who mercilessly tease him. Wikipedia quickly reminded me of the rest, and now I won't sleep for years.
The Peanut Butter Solution [Wikipedia]