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.
The Irishman replies, "Well, you see, I have two brothers. One is
in America, the other in Australia, and I'm here in Dublin.
The bartender admits that this is a nice custom, and leaves it there.
One day, he comes in and orders two pints. All the other regulars 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 a light dawn in his eye
and he laughs. "Oh, no," he, says, "everyone's fine. I've
just quit drinking."