Those were the words of Father Damien Karass’ dead mother, pathetically questioning her son’s choice of placing her in a nursing home. In reality it was only Damien’s guilty conscience that allowed the demon possessing Regan MacNeil to get in his head and manifest his mother’s pathetic image.
The demon, in its effort to increase Damien’s agony did something that actually made him feel better. He intimated that Mom had taken up a new hobby and has eternity to perfect her skills. She now spends all her time creating a vortex of suction surrounding the male member in a location only arrived at by taking the #5 Ferry down the River Styx.
Get it? If you were a member of the movie-going public in 1973 or into William Peter Blatty novels you should have no problem.
Too young? Figure it out.