Complex sentence: Then he turns around and the third rabbit, standing on top of the other two, uses the sledgehammer to hit him who falls at the floor and his swelling part grows taller with a surrender flag on it.
Split into simpler sentences: Then he turns around and the third rabbit, standing on top of the other two, uses the sledgehammer to hit him. He falls at the floor, his swelling part grows taller with a surrender flag on it.