First your step-son (POV as usual) would catch you masturbating unknowingly under the covers, and when you see him you're embarrassed and stop. You invite him into bed though and cuddle up to him, nestling him in your breasts covered in lingerie. It takes a moment, but you talk about your masturbating and how embarrassing it must have been to see you like that. So you try to comfort him to get passed this embarrassing moment. However you realise how much your step-son enjoyed watching it, and you slowly get the idea to include him. You guide his hand, underneath the covers, to your wet pussy. ...

First your step-son (POV as usual) would catch you masturbating unknowingly under the covers, and when you see him you're embarrassed and stop. You invite him into bed though and cuddle up to him, nestling him in your breasts covered in lingerie. It takes a moment, but you talk about your masturbating and how embarrassing it must have been to see you like that. So you try to comfort him to get passed this embarrassing moment. However you realise how much your step-son enjoyed watching it, and you slowly get the idea to include him. You guide his hand, underneath the covers, to your wet pussy. You realise that he enjoys it just as much as you. You then cuddle him a bit more, kiss him, and you whisper sexily that he should crawl under the covers. The rest of the video is of your step-son (POV) under the covers licking you to an orgasm. The idea would be that we can't see you when the covers are down (maybe just a bit, depends on the light), but you lift the covers occasionally to check up on your step-son, which would reveal your beautiful body and face. The rest of the time when we can't see, your voice guides your step-son, telling him how turned on your are, and where to lick. All the way to your orgasm. Then you end it with a quick cuddle where you're worn out, and you give him kisses, and suggest the two of you go to rest cuddling together. You kiss him. The light turns off.