A handsome young man was approached by a kind looking old man in a restaurant. The old man said to her, 'You look exactly like my younger son. Sadly he passed away one year back. Could you do me a favor and say 'Goodbye, father' with a kind smile on your face when I leave?
The young man agreed for the same and said, 'Goodbye, father' when the old man left. Soon after, he got the most disengaging shock of his life.
Can you guess what the shock was?