An Englishman, a Scotsman, and an Irishman are at a bar

A fly lands on the edge of the Englishman's pint. He says to the bartender, "This beer's gone bad, I'd like another."

The fly lands in the Scotsman's pint. He pulls it out and tosses it on the bar. "Tis just a fly, it didnae hurt anybody," he says and takes a big gulp.

The fly then lands in the Irishman's pint. He pulls the fly out squeezes the fly and shakes it, and says, "Spit it out, ya greedy bastard!"