When Pakistani president Musharraf comes to Delhi for a meeting with Atal Bihari Vajpayee.
After dinner, Vajpayee says to Musharraf: "Well Parvez, I don't know what you think of the members of your Cabinet, but mine are all bright and brilliant." "How do you know?" asks Musharraf "Oh well, it's simple", says Atal. " They all have to take special tests before they can be a minister. Wait a second".

He calls Advani over and asks him "Tell me Advaniji, who is the child of your father and of your mother who is not your brother and is not your sister?" "Ah, that's simple", says Advani, "it is me!" "Well done Advani", says Vajpayee and Musharraf is very impressed. He returns to Islamabad and wonders about the intelligence of the members of his Cabinet.
He calls in his favourite member of cabinet and asks: "Tell me, who is the child of your father and of your mother who is not your brother and is not your sister? " He thinks and thinks and doesn't know the answer. "Can I think about it a bit further Sir? May I let you know tomorrow? ". "Of course", says Musharraf, "You've got 24 hours."

He goes away, thinks as hard as he can, calls in his Cabinet Secretary, Chief Secretaries and Joint Secretaries, but no-one knows the answer.Twenty hours later, the member of Musharraf's cabinet is very worried-still no answer and only 4 hours to go. Eventually he says to himself: "I'll ask Bill Clinton, he's clever, he'll know the answer." He calls Clinton. "Mr.President", he says, "Tell me who is the child of your father and of your mother who is not your brother and is not your sister?" "Very simple", says Clinton, "It's me!"

"Wonderful!" says the Cabinet member and hangs up. Jumping with joy realizing that he knows the answer, he rings Musharraf. "Sir, I've got the answer!".

"What is it?"

"It's Bill Clinton".

"No, you idiot",
says Musharraf, "It's Advani"!!!