Two men (dads) are talking, the subject strays to porn and, “hey, have you ever seen that Daughter Swap site?” It turns out that they both love that kind of porn, and they both have hot daughters, so maybe they should try doing it for real? However they broach the subject to the girls, they are down for it and they get started.

As they are getting undressed, and while they are fucking, the dads are checking out their own daughters, and the daughters are checking out their own dads. There is also dialogue:

“Wow, babe, your tits are really amazing!”
“Damn! I’ve always wanted to see your ass naked like that!”
“Your pussy looks like it must be so tight!”
“Dad, I didn’t realize your cock was so big!”
“My dad is really fucking you good! I’m so jealous!”
“I wish you’d do that to me, Daddy!”

Eventually after one of these comments, the dads suggest that they should unswap and fuck their own daughters. The daughters eagerly agree. (Or maybe the daughters suggest it, and the dads agree.) So that’s what they do. In the end, it’s a full four-way, with each of the girls getting it from both dads.

---

It should go without saying that this same concept can easily be done with moms or sisters, also.

To avoid trademark claims, it would probably be wise to avoid mentioning “daughter swap” specifically. It should be safe to refer to “that site where the dads fuck each other’s daughters right in front of each other.”

I actually don’t like the daughter swap site because it’s not incest, even if they are trying to cash in on incest kink. This would solve that problem for me.