Oh... so the scene in Christmas Story where the kid gets his tongue frozen on a lampost (?) wasn't funny to you?
Dumb kid with tongue stuck to pole (I've actually done this myself-now a formerly dumb kid) = baby injured?
a) Laughing at something depicted in a movie isn't the same as laughing at a real occurrence. If you think it is, then I humbly suggest you need to re-examine your view of movies and the concept of fictional events.
b) I don't recall physical injury to the kid in the movie--just some injured pride.