put/get one's back up
惹……生气/发怒
A:What a mess, Jack!
A:杰克,你怎么把这儿弄得这么乱。
B:I'm playing with my toys, Dad.
B:我在玩玩具,爸爸。
A:You'd better tidy up the room now, or you'll get your mum's back up.
A:你最好马上把屋子收拾好,否到你会惹你妈妈生气的。