Pam to Rick "Rick, if I should ever happen to lose my mind--"
Rick to Pam "Oh, I don't think you'd lose it. It might rattle to one side."
The Uninvited (1944), starring Ruth Hussey and Ray Milland as a sister and brother who buy their dream house only to find that it is haunted by a vengeful ghost. One of my favorite movies, by the way.