NORMAN: [voiceover as his mother] No! I tell you no! I won't have you bringing some young girl in for supper! By candlelight, I suppose, in the cheap, erotic fashion of young men with cheap, erotic minds!
[voiceover] Mother, please...!
[voiceover as his mother] And then what? After supper? Music? Whispers?
[voiceover] Mother, she's just a stranger. She's hungry, and it's raining out!
[voiceover as his mother] "Mother, she's just a stranger!" As if men don't desire strangers! As if... ohh, I refuse to speak of disgusting things, because they disgust me! You understand, boy? Go on, go tell her she'll not be appeasing her ugly appetite with my food... or my son! Or do I have tell her because you don't have the guts! Huh, boy? You have the guts, boy?
[voiceover] Shut up! Shut up!
Norman's mother, from inside his own head, is berating him for sexual thoughts. Moms don't like sex, supposedly. But is it really moms who don't like sex? Or is it the film itself, which gleefully watches over Marion in her underwear, while also moralistically and punishing her for daring to appear on screen in her underwear?