An Irishman and an American were sitting in the bar at Shannon Airport.
"I've come to meet my brother," said the Irishman. "He's due to fly in from America in an hour's time. It's his first trip home in forty years."
"Will you be able to recognize him?" asked the American.
"I'm sure I won't," said the Irishman, "after all, he's been away for a long time."
"I wonder if he'll recognize you?" said the American.
"Of course he will," said the Irishman. "Sure, an' I haven't been away at all."