President George Bush is on a trip to several European countries.
 While visiting England, he is invited to tea with the Queen.
 He asks her what her leadership philosophy is.
 She says that it is to surround herself with intelligent people.
 He asks how she knows if they're intelligent.
 "I do so by asking them the right questions," says the Queen. "Allow me
 to demonstrate." The Queen phones Tony Blair, puts him on a speaker
 phone and says, "Mr. Prime Minister, please answer this question for me.
 "Your mother has a child, your father has a child, and this child is not
 your brother or sister. Who is it?"

 Tony Blair responds, "It's me, madam."
 "Correct. Thank you and goodbye, sir," says the Queen. She hangs up  and
 says, "Did you get that, Mr. President?"
  "Yes ma'am. Thanks a lot. I'll definitely be using that!"

 Upon returning home, he decides he'd better put some of his old friends
 to the test. He calls Dick Cheney first and says, "Hi, Dick, I wonder
 if you can answer a question for me."

 "Why, of course, Mr President. What's on your mind?"

  "Well, your mother has a child and your father has a child, and this
  child is not your brother or your sister. Who is it?"

  Cheney hems and haws and finally asks, "Can I think about it and get
  back to you?" Bush agrees, and Cheney hangs up. Cheney immediately
 calls  members of his staff and they puzzle over the question for several
 hours,  but nobody can come up with an answer.

  Finally, in desperation, Cheney calls Colin Powell at the State
 Department and explains his problem. "Now look here, Colin, your  mother
 has a child, your father has a child, and this child is not your brother
 or  your sister. Who is it?"
 Powell answers immediately, "It's me, of course, you idiot."
 Much relieved, Cheney rushes back to call Bush and exclaims, "I know
 the answer, sir! I know who it is! It's Colin Powell!"

 And Bush replies in disgust, "Wrong, it's Tony Blair."