An Englishman, a Scot, and an Irishman went into a pub and each ordered a pint of Guinness.
Three flies flew in the door and one landed in each of the full pints.  The Englishman said "That's disgusting" and turned and walked out the door.  The Scot said Ack!! , grabbed the fly, tossed it on the floor and downed the pint.  The Irishman grabbed the fly and squeezed it hard saying "spit it out ya bastard, spit it out!"