After many rounds of, “We don’t know if Osama bin Laden is still alive”, Osama decided to send Bush a letter in his own handwriting to let him know he was still alive.
Bush opened the letter and it contained a line of coded message, “370H-SSV-0773H” Bush was puzzled, so he emailed it to Condoleezza Rice.
Condi and her aides had not a clue either, so they sent it to the FBI, CIA, and then to MI6. Eventually, they asked the Mossad (Israeli intelligence) for help.
Within a minute the Mossad emailed the White House with this reply, “Tell the President he’s holding the paper upside down.”