After numerous rounds of "We don't even know if Osama is still alive",Osama himself decided to send George W a letter in his own handwriting to let him know he was still in the game. Bush opened the letter and it appeared to contain a coded message:

370HSSV-0773H.

Bush was baffled, so he typed it out and emailed it to Colin Powell. Colin and his aides had no clue either so they sent it to the CIA. No one could solve it so it went to the NSA and then to MIT and NASA, and the Secret Service.

Eventually they asked Britain's MI6 for help.

They cabled the White House:

"Tell the President he is looking at the message upside down."