After numerous rounds of "We don't 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 appeared to contain a single line of
coded message:
370HSSV-0773H
Bush was baffled, so he e-mailed it to Condi Rice. Condi and her aides
had no clue either, so they sent it to the FBI. No one could solve it
at the FBI so it went to the CIA, then to the NSA.
With no clue as to its meaning they eventually asked Britain's MI-6 for
help.
Within a minute MI-6 cabled the White House with this reply: "Tell the
President he's holding the message upside down."
