Both of them start masturbating

"Sorry, mom i didn't knew this was this kind of film... But once started let's continue it"
Soon, the caracter on the film, are having sex carefully. they never use condom and that gives James an idea for later.
As they fuck, he takes his cock off of his pants and starts stroking it
"We talked about masturbating together later... this is the perfect time, let's do it"
With a smile, and without taking her eyes off of the screen she starts masturbating too, and you can guess how she looks at herself fucked by his little son in the screen and gets horny about it
She gives several looks at James cock, pondering it and enjoying what she sees.
She starts rubbing her clit with her fingers as the other hand starts pinching her nipples making her moan hard