>the meaning of “who wears the pants in this house”
That's pants as opposed to skirts. It's a gender implication, not a scarcity one.
You're right for the english version, but the Chinese version is IIRC a family that shares one pair of pants - the person who needs to go outside wears the proper clothes.
You're right for the english version, but the Chinese version is IIRC a family that shares one pair of pants - the person who needs to go outside wears the proper clothes.