"George W. Bush Meets Moses" joke

George W. Bush was walking through an airport last week, when he saw
an old man with white hair, a long white beard, wearing a long white
robe and holding a staff. He walked up to the man, who was staring at
the ceiling, and asked, "Excuse me sir, aren't you Moses?"
The man stood perfectly still and continued to stare at the ceiling,
saying nothing.
Again, George W. asked, a little louder this time, "Excuse me sir,
aren't you Moses?"
Again, the old man stared at the ceiling motionless without saying a
word.
George W. tried a third time, louder yet, "Excuse me sir, aren't you
Moses?"
Again, no movement or words from the old man. He continued to stare at
the ceiling.
One of George W.'s aides asked him if there was a problem, and George
W. said, "Either this man is deaf or extremely rude. I have asked him
three times if he was Moses, and he has not answered me yet."
To which the man, still staring at the ceiling finally replied to the
aide, "I can hear him and yes, I am Moses, but the last time I spoke
to a bush, I spent 40 years wandering in the wilderness."