A bar is empty except for two patrons. One of them staggers over to the other and says, "How's it going? Where you from?"
The other guy says "Ireland."
The first drunk says "That's cool! I'm from Ireland too! Let's have a round for Ireland!" They both drink merrily.
Then the first guy says "So where in Ireland are you from?"
"Dublin."
"Dublin? Awesome! I'm from Dublin too! Let's have another round for Dublin!" Once again, they both drink merrily.
Then the first guy asks, "So where did you go to school?"
"St. Mary's, class of '62" answers the other guy.
"Incredible! I graduated in '62 from St. Mary's, too! Let's have a round for St. Mary's!" Once again, they suck down another round.
Just then, one of the bar regulars walks in and sits at the bar. He asks the bartender, "So what's going on today?"
The bartender answers, "Nothing... The O'Malley twins are drunk again."