The words that led to the most interminable fistfight in science fiction television: Kirk vs. Finnegan, Star Trek: Shore Leave. To get the true feeling, say it aloud to yourself with as good an Irish accent as you can manage. If you're a native of Ireland, say it aloud to yourself with your best impression of an American attempting to imitate your accent and failing lamentably.
"Fight me, Jimmy!" A new mantra for a new age.