Ok hear me out. Unconventional but I think it could be both hot and very taboo. To make a long story short, basically an older man and younger girl, about 18, trick his coworker and his daughter and make them believe they are a father daughter pair as well. Fake F1 lets F2 fuck his daughter (D1) if he can in turn fuck his daughter as well. After some initial reluctance, F2 agrees to the foursome. They swap. During the swap, F1 and D1 get very handsy with each other, shocking the fuck out of F2 and D2! "Thats your daughter man, wtf?!" F1 goes "I know but I cant help it, look at these tits!' F2 and D2 dont know what to do. They continue fucking each others "daughters" just when F1 sticks his cock in D1 mouth. Again they lose it like "OMG" but D1 goes on and sucks her "dads" cock. Watching this makes F2 and D2 both uncomfortable but something stirs in both their loins seeing this. A father and daughter having sex in front of them. Its so wrong yet they cant look away. F1 sees the look on their faces and says "Maybe you should try his!" pointing at his cock. They arent sure what to do. Its so wrong but do they join in? D2 looks at her dads rock hard cock. F2 isnt sure what to do, does he let her touch it. She slowly touches it and his cock jumps. "Go ahead" D1 says. They have long eye contact, and she goes for it, she wraps her lips around her dads cock. "OMG" F2 lets out.

Soon F1 and D1 graduate to fucking. Wondering if they should push this any further, they both are unsure if they should or not. D2 bends over and says nothing. After a long pause, F2 says fuck it and inserts his cock in his little girl. from here they bang like rabbits, multiple positions, they still say its wrong but cant help how good it feels. Once all is said and done and they both explode on ther girls faces, F1 says "This was amazing! But I have a confession, this isnt really my daughter, I dont even have kids, shes a friend of mine, she a bartender at Tipsy McStaggers! But this was fucking hot!" Father and daughter just look at each other and back at him like "You son of a bitch!"

The End lol