Mother Son

Difficult Teen Therapy: Son had begun to have issues as he hit teens, and starting being depressed and acting out, giving parents a hard time. Parents send him to a therapist, who uses hypnotism. He just means to get him to relax, understand his parents have his best interests in mind and trust them. Mom notices he seems to be getting more attentive to them, wanting to please, and be nice. (or can reverse as Dad/Daughter)
Strip Poker Video: Looking through the attic, son (with friend?) finds a video of his mom playing strip poker leading to sex, from when she was younger. (if like it naughtier, video could include her brother(s)). https://xhamster.com/videos/twistys-strip-poker-alice-lighthouse-8222008
Magic Rings: Dad had passed away. The wedding rings that mom and dad wore have been passed down over the centuries. These rings have a magical power to bind the pair in love and desire. However over time the true power of them is not known to the wearers. It had been explained to mom that when one of them dies, the rings need to be passed down to the first child for him or her to wear when she or she gets married. Mom decides to give her son the dad’s ring then, but figures she can wear hers until the son finds his own partner, not knowing the true nature of the rings. Son puts his on to feel close to his dad. Once he has the ring on mom and son both find themselves desiring the other… 
Caught in Sexy Nightie: Mom and dad’s sex life has floundered. She decided to try and seduce dad. She makes an at home date for him, makes a fancy meal and dresses in a sexy nighty for when he gets home having sent her teen son to a friend’s. But dad calls and cancels. Son (and friends?) burst in saying they decided to hang out here instead, catching mom in her sexy babydoll.
https://amyroleplayer.wixsite.com/website/lingerie?lightbox=dataItem-kapljwe7
Switched bodies: After participating in an ESP study, a mother and daughter (or dad and son) wake up in each other’s bodies. 
Nude Yoga: Mom decides she and her son need to get in better shape and signs them up for a yoga class, not realizing until the class starts that it is a nude yoga class. 
Halloween: Dad can’t make a Halloween party. Unknowingly son is going to the same party, as it is at the house of a school buddy. Mom wears a rather risque outfit. One or the other does not recognize the other.
Joint hypnotherapy: Mom and son see a therapist due to their fighting a lot. Therapist uses hypnotism to get them to uncover their deeper feelings toward each other. This exposes his feelings of lust toward her, and her wanting him as well.  
Nudist Son: Son likes to go nude at home when he is alone. Does not realize that when he enters the house, mom is alerted and the security cameras are activated on her app. 
Sex education: Mom and dad divorced 5 years go. He got sole custody. Did is very conservative and sent son to a boys school. Now mom won right to have son over summers. He comes to stay with mom. After being there a week, and enjoying the more relaxed atmosphere, he asks mom about sex ed. 
Locked in closet: Mom is helping son move things into the closet in her room in their new house, which is an older home. As they both enter the small closet, the door blows closed and the latch on the outside falls into place, trapping them in there. Dad is not due home for a couple of hours.  
Nude dance class: Mom comes to pick up son at dance class. The door in normally locked to the studio, but she gets there early and decides to just listen in. In leaning against it, it turns out it was not latched properly and opens a little. Inside she sees that the class is practicing totally in the nude. After looking a little she closes the door before being discovered. After class, once in the car, she confronts him about it. (can change characters/relationships) 
Vacation: Mom and dad are supposed to go on a romantic getaway, but dad has to go take care of ill parent at last moment. Mom invites son along instead. 
Anatomy Drawing: Boy in biology class gets assignment to do a report on the reproductive anatomy, and it has to include drawings. He needs a live model. (can switch roles) 
Backpacking trip: Mom and son go on a multiple day backpack trip 
The Talk: Boy is noticing that girls are paying more attention to him He asks mom to talk about how to respond.
Mom caught naked: Mom gets out of shower and goes to kitchen to get some lotion in the nude thinking she is home alone. Son (and friend?) have just walked in early.