An emotionally cold, callous mother who consequently psychologically destroys her children, thereby ruining their lives. Analogous with 'refrigerator mother'.
Brenda: "I got sent to the principal's office today for allegedly telling the teacher to fuck that fucking fucker in regards to the principal, but I got in even worse trouble when the principal asked about my comment and I told him that I had actually said to make love to that lovemaking lovemaker. Which one is worse?"