Three Englishmen

Three Englishmen were in a bar and spotted an Irishman.
So, one of the Englishmen walked over to the Irishman, tapped him on the shoulder, and said :
- Hey, I hear your St. Patrick was a drunken loser.
- Oh really, hmm, didn't know that.
Puzzled, the Englishman walked back to his buddies.
- I told him St. Patrick was a loser, and he didn't care.
The second Englishman remarked :
- You just don't know how to set him off... watch and learn.
- So, the second Englishman walked over to the Irishman, tapped him on the shoulder and said :
- Hey, I hear your St. Patrick was lying, cheating, idiotic, low-life scum !
- Oh really, hmm, didn't know that.
Shocked beyond belief, the Englishman went back to his buddies.
- You're right. He's unshakable !
The third Englishman remarked :
- Boys, I'll really tick him off... just watch.
So the third Englishman walked over to the Irishman, tapped him on the shoulder and said :
- I hear St. Patrick was an Englishman !
- Yeah, that's what your buddies were trying to tell me.