One day, Paddy Irishman, Paddy Englishman, and Paddy Scotsman 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.
Paddy Englishman pushed his beer away from him in disgust.
Paddy 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 YOU LITTLE THIEF! SPIT IT OUT, SPIT IT OUT!"