The old man raised only his only granddaughter since his daughter died giving birth. The old man has had a difficult life, his wife died, his only daughter also died and he had to stay raising only the only granddaughter he has. Working hard as a donkey all his life he gave education to his granddaughter and used to do everything he asked the girl. Here we see how the very dirty has gotten into the girl's mind that swallowing his semen is nutritious. The girl as a good granddaughter does everything he asks and if we see her face, we can realize that the girl does not cause any disgust to make a straw to her grandfather before bedtime.