My reaction to porn films is as follows: After the first ten minutes, I want to go home and screw. After the first 20 minutes, I never want to screw again as long as I live.

Jong’s quip hinges on a rapid reversal: pornography initially stimulates desire, but prolonged exposure becomes numbing or even repellent. The joke implies that porn’s repetitive, mechanical depiction of sex can quickly drain erotic charge, replacing curiosity with boredom, alienation, or fatigue. It also gestures toward a feminist critique associated with Jong’s era: that commercial porn often reduces sex to performance and bodies to objects, which can distort expectations and diminish the felt, relational dimensions of intimacy. The line’s bluntness is part of its point—using shock-comedy to puncture the idea that more explicitness automatically equals more arousal or sexual freedom.