Literal expression means to tear someone a new butt-hole, figuratively means to verbally or physical abuse or criticize someone thoroughly so that they feel destroyed.
I made a joke about her butt looking big, and she ripped me a new one.
A man or women, unmarried, and living like a house wife or house husband. A house mouse is very pampered and well cared for, in exchange for this the mouse takes care of the house and anything elts to keep master happy.