Her son isn't proposing to wear the pants as high waters.

她的儿子不打算穿这条裤子，因为水位很高。

So the expression " to wear the pants in the family" means to be the person who's making the decisions.

因此，“在家庭中穿裤子”这句话的意思是做决定的人。

Frank will never get anywhere if he doesn't get up some gumption. And he's got to get somewhere! He's got to make money, even if I've got to wear the pants in the family to make him do.

要是弗兰克没有一点勇气，他将永远一事无成！他必须赚钱，即使我不得不当家掌权，好叫他这样去做。