The son jerks one off with the (step-) mother's panties. She catches him and helps him. She rubs the penis, sucks and blows and then lets herself be fucked until it cums on her body. Now he has opened up other possibilities for himself

he deliberately let himself be caught jerking off by his pretty stepmother, in the hope that she would pay more attention to him. It worked, she rubs and sucks and can be fucked and sprayed with sperm