get (one's) dander up
To become annoyed or angry. Don't get your dander up with me—I'm just trying have a conversation here. I know I got my dander up a bit last night, so I understand why you're avoiding me.
get someone's dander up
and get someone's back up; get someone's hackles up; get someone's Irish up; put someone's back upFig. 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.
get someone's dander up
OLD-FASHIONEDIf someone or something gets your dander up, they make you feel very angry. I read the article and have to admit, it really got my dander up. Note: The origin of the word `dander' is unknown.
get your dander up
lose your temper; become angry. The sense of dander in this originally US expression is uncertain, as neither dandruff nor dunder (meaning ‘the ferment of molasses’) seems entirely plausible.