Norma Bates in Psycho

Poor Norman Bates. All he wants to do is listen to Beethoven and devote time to taxidermy. And yet his mom nags him all the time into maintaining his failing motel. (Spoiler Alert!) No wonder business is slow; Mrs. Bates demands that Norman take a Ginsu to anyone foolish enough to stop by. (At least she taught him how to do housework, since the shower in room #1 is clean as a whistle.) A lot of moms are possessive of their children, but most are at least kind enough not to take up residence in their sons’ brains — or badger them from beyond the grave.