The son of an ass
Birbal was not only a Minister but also the court jester. He used to amuse Akbar with his wit, his talent and his earthly wisdom. As a result, Akbar was very fond of Birbal.One day the Emperor was a bit upset. Birbal happened to displease him while he was in this mood, and he burst out, "You are the son of an ass!"
Birbal immediately replied, "You are perfectly right in your statement. That is why I consider you to be my true father."
Sri Chinmoy, The Moghul Emperors, Agni Press, 2001