grumpy old man 见色忘友；斗气老顽童；脾气暴躁的老男人

【例句】
Contrary to the UK stereotype of the grumpy old man not wanting to be dragged to the shops, men shopped more often than women did.
与英国典型的脾气暴躁的老年男性不愿意被拖去购物相比，这里男性购物的次数多于女性。

Most people would have made this weather an excuse not to come so far to visit a grumpy old man.
遇到这种天气，大多人会以此为借口，不来看望一个脾气不好的老人。