Brilliant!!!

Father: I want you to marry a girl of my choice.

Son: "I will choose my own bride"

Father: "But the girl is Bill Gates's daughter"

Son: "Well, in that case...OK"

Next day, Father approaches Bill Gates.

Father: "I have a husband for your daughter"

Bill Gates: "But my daughter is too young to marry"

Father: "But this young man is a vice-president of World bank"

Bill Gates: "Ah, in that case...OK"

Finally, Father goes to the president of the World Bank

Father: "I have a young man to be recommended as a vise-president"

President: "But I already have more vice-presidents than i need!"

Father: "But this young man is Bill Gates's son-in-law"

President: "Ah, in that case...OK"