dog是狗，house是房子，in the doghouse真正的意思是受冷落的；受排斥的；惹上了麻烦；失宠；遭冷遇。

【例句】
I'm in the doghouse - I broke Sara's favourite vase this morning.
我惹了麻烦。今天早上我打破了Sara最喜欢的花瓶。

Her husband was in the doghouse for leaving her to cope on her own.
她的丈夫因弃她于不顾而陷入麻烦。