Because, at times, he acts like a clown, doing the funny faces nd whatnot, but his methods of killing are particularly brutal.. the first movie was not as brutal.. the secind one I think they just thought up the most awful ways you could make someone suffer and eventually die..
So, yeh, I wouldn't see it, if I were you.. if you have any specific questions, though, just let me know., I hate to give anything specific away, but we can pm, or something..
Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..