I'll give two examples of this and spare you a lengthy explanation:
'Throatgaggers', Gen Padova, pre pornography interview,
Interviewer: "What are you here to do today?"
Padova: "I'm here to suck cock."
Anabolic 'Initiations', Casey Klein, pre pornography interview,
(Man behind camera hands Klein blindfold)
Klein (furrows brow): "What's this for?"
As you probably have guessed it were these moments that I used for masturbation, these moments not technically within the pornography proper. Sometimes words are enough.