"Well," said the Queen, "the most important thing is to surround yourself with intelligent people."
Obama frowned, "But how do I know the people are really intelligent?"
The Queen took a sip of her tea. "Oh, that's easy; you just ask them to answer an intelligent riddle."
The Queen pushed her intercom. "Please send Tony Blair in here?"
Tony Blair walked into the room and said, "Yes, my Queen?"
The Queen smiled and said, "Answer me this please, Tony, your mother and father have a child. It is not your brother and it is not your sister. Who is it?"
Without pausing, Tony Blair answered, "That would be me."
"Yes! Very good," said the Queen.
Obama went home to ask Joe Biden, his vice president the same
question. "Joe, answer this for me. Your mother and your father have a child. It's not your brother and it's not your sister. Who is it?"
"I'm not sure," said Biden. "Let me get back to you on that one..."
Biden went to his advisors and asked every one, but none knew. Finally, he ended up in the men's room and recognized Colin Powell's shoes in the next stall. Biden asked Powell, "Colin, can you answer this for me? Your mother and father have a child and it's not your brother or your sister. Who is it?"
Colin Powell yelled back, "That's easy, it's me!"
Biden smiled, and said, "Thanks!" Then, he went back to Obama.
"Say, I did some research and the answer is. It’s Colin Powell!"
Obama got up and angrily yelled into his face, "No! you idiot! It's Tony Blair!"