[Silent Wings]

An Irishman walks into a bar in Dublin, orders three pints of
Guinness and sits in the back of the room, drinking a sip out of each one
in turn.
When he finished all three, he comes back to the bar and orders
three more.
The bartender says to him, "You know, a pint goes flat after I
draw it; it would taste better if you bought one at a time." The Irishman
replies, "Well, you see, I have two brothers. One is in America,
the other in Australia, and I'm here in Dublin. When we all left home,
we promised that we'd drink this way to remember the days we all
drank together."
The bartender admits that this is a nice custom, and leaves it
there.
The Irishman becomes a regular in the bar and always drinks the
same way: he orders three pints and drinks the three pints by taking
drinks from each of them in turn.
One day, he comes in and orders two pints. All the other regulars
in the bar notice and fall silent. When he comes back to the bar for the
second round, the bartender says, "I don't want to intrude on your grief,
but I wanted to offer my condolences on your great loss."
The Irishman looks confused for a moment, then light dawns in his
eye and he laughs. "Oh, no," he says, "My brothers are fine. It's
me..."I've quit drinking!"