Irish joke

Two men were sitting next to each other in a bar.  After a while, one guy looks at the other one and says,"I can't help help but think, from listening to you, that you are from Ireland."  

The other guy responded proudly, " Yes, that I am!"

The first guy says," and what part of Ireland would that be?"

"I'm from Dublin." The guy answered.

"Sure and Begora, so was I, what street did you live on in Dublin?" he asked.

"Oh, a lovely little area, I lived on Mccleary Street in the old central part of town." said the second one.

"Faith, it's a small world, so did I, and what school you be going to?

"Well now I be going to St. Mary's of course" he replied.

The first guy gets really excited and says,"and so did I, tell me what year did you graduate?" 

The other guy answers "well now I graduated in 1964"

"The good lord must me smiling down apon us, I can hardly believe our luck brought us together.  Can you believe I graduated from saint Mary's in 1964 too?" he said.

About that time another guy walks into the bar and orders a beer.  The bartender walks over shaking his head and mutters,"It's going to be a long night the Murphy Twins are drunk again."