Your Gf/Wife and Mom magically swap bodies and in order to swap them back you'd have to fuck one.
Who'd you fuck?
Your Mom in your Gf/Wife's body or your Gf/Wife in your Mom's body... Or both?
In real life: I check myself into an asylum or pay for them to go to an Airbnb and tell the to try working it out or even paying for a male escort. Cause there’s no winning in that particular circumstance.
Screw your girlfriend in your mom’s body: your girlfriend is going to wonder why you enjoyed it so much even if you were just doing what you could to fix things while your mom suddenly comes to in her body with you nutting inside of her.
Screw mom in girlfriend’s body: some very awkward family dinners and girlfriend is going to remember your O face from plowing her body while your mom was in it.
Now a fictional character? Let’s say we got an MC who is a bit of a slacker and is less opposed to the idea of incest.
MC lives with parents to save money and girlfriend moves in with him or is constantly coming by. Son works but he really lacks ambition and never tries to move up the ole ladder while girlfriend can never stay employed for more than a month and constantly argues with mom.
mc’s dad goes away on a long business trip and girlfriend and mom try to get along as MC’s birthday is coming up but ok his birthday, they can’t and MC, who is extremely flustered blows out his birthday candles with several wishes knocking around in his head.
Well those wishes all mash together (that his mom and GF would get along, that he’d get laid a lot in the next year, that his mom would be nicer to him, etc) and that night, when he’s fucking his GF, he gets the wishes partially granted. He comes and girlfriend and mom swap with girlfriend getting a surprise as mom was using a vibrator on herself.
A lot of shock and all three of them try to figure out what happened. Girlfriend isn’t much help as she immediately tries to get mom’s banking info, only to find out mom uses a password and not facial recognition, and mom tries to pretend the switch happened and “breaks up” with MC who realizes it immediately.
MC is the first one to throw out the “maybe we just need to fuck again, idea.” Starting an argument, then another argument over who should get fucked, then a moment of truce between mom and girlfriend where they say MC is terrible at making hard choices so MC just flips a coin and starts plowing one of them, then when they ask if he’s sure he know how to break the curse, he pulls the other one on top of the other and takes turns fucking them but he gets too excited and cums in neither of them, so the switch doesn’t occur.
They all go to sleep in a pile and come to the next morning still switched. Mom says she is okay with him fucking girlfriend in her body as long as she doesn’t have to watch and girlfriend says the same about her body…but she wants to watch so she can see prim and proper mom go wild for her son.
Son tries to fuck girlfriend but he’s having a lot of trouble turning her on physically so he has mom come in and asks she tell him what turns her on so he can have sex with his girlfriend that she’ll enjoy. Then when mom only gives vague instructions he put his pants back on and says she needs to show him by touching girlfriend and girlfriend needs to show her and he isn’t going to try and break the curse until they literally kiss and make up.
After they do he fucks both of them and then they have a surprisingly loving threeway. And they all collapse in each others arms…but now girlfriend is in son’s body, son is in girlfriend’s body, and mom is now in Dad’s body while dad is in mom’s body. Requiring a whole new issue
