Stepson knows her secret and gets what he wants

Stepmom gets a surprise from her Stepson about a picture he has, that is time-stamped and dated showing her cheating on her husband. He says he will tell if she doesn't strip for him. She does but that's not enough. Next, he wants her to masturbate with a dildo he has till she cums. Very embarrassed she not willing to agrees if he promises not to tell and destroy the picture. He agrees so she starts fucking herself with the dildo. After a few minutes, she starts to squirt and has an orgasm. As his final command, she has to wear that same short mini shirt all week with no panties on at all. She's not happy about it but agrees to anyway.