There is no scripture that explains the fact that a baby's head has been joined to create a god called Hanesha. This movie, called the "Director's Special", according to different websites and the about of the move, it is a comedy - drama. So the intent of the director was to try and make a joke. So we probably should not over analyze this.
I agree with @TheLittleNaruto that it is a fake story because that video is some movie movies are not real all the time. This movie is not very true, considering nothing in the scene that is here is true. Everything about this movie, even a search on the IMDB will tell you that this movie is a comedy, making the movie not true.
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