An Irishman, an Englishman, and a Scotsman go into a pub and each order a pint of Guinness. Just as the bartender hands them over, three flies buzz down, and one lands in each of their pints.
The Englishman looks disgusted, pushes his pint away, and demands another one.
The Scotsman picks out the fly, shrugs, and takes a long swallow.
The Irishman reaches into his glass, pinches the fly between his fingers, and shakes it while yelling, “Spit it out, ya bastard! Spit it out!”