After numerous rounds of "we don't even know if Osama bin Laden 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:
Bush was baffled so he e-mailed it to Condoleeza 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 (Israeli Intelli gence) for help. Within a minute the Mossad e-mailed the White House with this reply:
"Tell the President he's holding the note upside down."