live under the cat's foot字面意思生活在猫的脚下，引申为怕老婆，妻管严。

【例句】
You’ve been under the cat’s foot since you got married.
自从你结婚了以后就一直怕老婆。

He lives under the cat's foot, and always does as her wife told.
他很惧内，总是对他老婆言听计从。