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get someone's dander upand get someone's back up; get someone's hackles up; get someone's Irish up; put someone's back up
Fig. to make someone get angry. (Fixed order.) Now, don't get your dander up. Calm down. I insulted him and really got his hackles up. Bob had his Irish up all day yesterday. I don't know what was wrong. Now, now, don't get your back up. I didn't mean any harm.
luck of the Irish
luck associated with the Irish people. (Also said as a catch phrase for any kind of luck.) Bill: How did you manage to do it, Jeff. Jeff: It's the luck of the Irish, I guess.
luck of the devil
Also, luck of the Irish. Extraordinarily good fortune, as in You've the luck of the devil-that ball landed just on the line, or Winning the lottery-that's the luck of the Irish. These superstitious attributions of good fortune date from the first half of the 1900s.
get Irish up
To become or cause to become angry, hostile, defensive, or irritable. John got his Irish up when his parents brought up the subject of college. Election season always gets my dad's Irish up.