An Englishman, a Scotsman, an Irishman

One day, an Englishman, a Scotsman, and an Irishman walked into a pub
together. They proceeded to each buy a pint of Guinness.
Just as they were about to enjoy their creamy beverage, three flies landed in
each of their pints and got stuck in the thick head.
The Englishman pushed his beer away from him in disgust.
The Scotsman fished the offending fly out of his beer and continued drinking
it as if nothing had happened.
The Irishman, too, picked the fly out of his drink, held it out over the beer
and then started yelling: "AH BEGORRAH! SPIT IT OUT, SPIT IT OUT!"