After numerous rounds of 'We don't even know if Osama is still alive', Osama himself decided to send George Bush a letter in his own handwriting to let him know he was still in the game.
Bush opened the letter and it contained a single line of coded message:
370H-SSV-0773H
Bush was baffled, so he e-mailed it to Condoleezza Rice. Condi and her aides had not a clue either, so they sent it to the FBI.
No one could solve it at the FBI so it went to the CIA, and then to MI6 . Eventually they asked the Mossad for help.
Within a minute the Mossad emailed the White House with this reply: 'Tell the President he's holding the message upside down.'