George W. Bush Meets Moses

While waiting for his flight to Sydney to attend the APEC Summit, US President George W Bush was waiting at an airport lounge, when he noticed an old man, with shaggy white hair and beard, wearing worn and faded robes and sandals, holding a walking staff in one hand, and a set of stone tablets tucked under his other arm.
He walked over to the old man, and asked, "Sir, are you by chance, Moses?" The old man tilted his head upward and seemed to be intently studying the ceiling tiles, and ignoring George.
George tried again, "Sir!" he said more emphatically, trying to get the old man's attention. "Sir! aren't you Moses? You really do look like Moses!" Still the old man ignored him, continued to study the ceiling tiles, saying nothing.
George got up on his tip toe, grabbed the old man by the arm and yelled, "SIR!!! Aren't you Moses?? SIR! Why aren't you answering me?"
The old man finally spoke, "Yes, I am Moses. But the last time I talked to a Bush, I was banished to the desert for 40 years!"