An Irishman, an Englishman and a Scottsman each order a pint of
Guinness. For some odd reason a three flies fly into each of their
pints of Guinness.

The Englishman looks at the Guinness and says to the bartender "I
simply can not drink this, give me a new one."

The Scottsman looks at the pint of Guinness and downs the whole
thing fly and all.

The Irishman pulls the fly out the the Guinness, holds it up by
its wings and yells "SPIT IT OUT DAMN YOU!!!!!"