A man walks into an old pub in Dublin, takes a seat at the bar and orders 3 pints.

After he is served he takes sips from them in turn and when all 3 glasses are finally empty he orders 3 more. The barkeeper, who has been watching him, has never seen such a weird style of drinking and says to the man: “You know when you leave a beer for too long it goes flat, so they would taste better if you order just one at a time.”
“Well”, says the man at the bar. “You see I have 2 brothers who I used to drink with, but unfortunately one moved to America and the other one moved to Australia. Now we are on 3 different continents and we hardly ever see each other. So I drink a pint for me and 2 for my brothers. This way we at least try to keep this tradition alive and it feels like we’re still together.”
The bartender agrees that this is a beautiful explanation for his weird behaviour and the man becomes a regular at his bar. The other customers also get used to his ritual of ordering 3 pints and drinking them in turn.
But then one day “Mister 3 Pints” comes in and orders only 2 glasses. The whole pub gets silent and the by the time the man orders a second round of only 2 pints the barkeeper says: “I’m terribly sorry as I don’t want to intrude on your grief, but I just wanted to offer my condolances on your loss.”
The man looks puzzled, but then a smile breaks through and he says. “Thanks a lot, but everyone is fine really. It’s just that my wife had us join the Baptist church and I had to give up drinking. But my brothers are still Catholics, so it didn’t affect them.”