[M4F] Doctor prescribes son to enter the sexual care of his Mom and Dad!

Hello fellow depraved sickos :) I have a prompt I like for this, but if you prefer something simpler or have ideas of your own, I'm more than happy to try something else! I would be the son, I imagined you could be the Mom and then we could share Dad, or you could just play him too :) All characters 18+, son is 20ish, parents are 50ish

Doctor's Orders:

My head is ringing as my Dad drives the three of us back from the doctor, while my Mom goes over the reading again... I'm not sure if this weirdo even had a real medical license, because he sent me home with perhaps the strangest diagnosis and treatment plan I've ever heard of: Acute sexual affective disorder, a rare depressive brain chemistry imbalance. The main symptoms are episodes of depression and suppression of your libido, and it's only treatable by pushing yourself to orgasm as much as possible until the condition abates, flooding your brain with dopamine to flush out the bad chemicals. Sure, I've been down lately, I mean I just flunked out of college, I'm living with my parents while my more successful brother rakes in money and women, and I don't have a girlfriend or even any friends to hang out with, but... this? The usual process for treatment here involves a spouse or partner taking intensive personal care of your sex life for the duration of treatment, since a doctor can't exactly babysit you 24/7, and the suppression of your sex drive means it's hard to masturbate enough on your own to fix the condition. The only problem with this is that, well, I've always been a bit of a loser, and I don't have a spouse or girlfriend to take care of that for me. Doc only saw one solution, strange as it may seem- my family has to become my sexual caretaker. I have to be naked 24/7 so they can monitor my arousal, and they have to make sure I get in enough sexual stimulation throughout my day- which, to my horror, will inevitably entail... help. Doc has seen this condition with male patients before apparently, and particularly recommended anal stimulation of the prostate... I think my soul left my body when we were all sitting around the table and heard that. "This could be a matter of life and death, it's a serious condition!" Mom exclaims... So we don't have the luxury to worry about things like 'taboo' and 'whether I want to jack off in front of my parents, get groped and felt up by them, or even more, based on the way Dad has started looking at me... This is NOT how I imagined my first sexual experiences going...