Joke

One day an Englishman, a Scotsman, and an Irishman walked into a pub together. They each buy a pint of Guinness. Just as they were about to enjoy their creamy beverage, a fly landed in each of their pints, and were stuck in the thick foam. 

The Englishman pushed his beer away in disgust. 

The Scotsman fished the fly out of his beer and continued drinking it as if nothing had happened. 

The Irishman, too, picked the fly out of his drink, but then held it out over the beer and yelled, "SPIT IT OUT, SPIT IT OUT, YOU BASTARD!!!"