There is a series called Daughter Swap. Where two 'dads' are friends and their 'daughters' are friends. The premise of the series, they agree to fuck each other's daughters at the same time in front of each other for some flimsy reason.

In of the ones I saw, each daddy ended up putting his dick in his own daughter. I hadn't seen that before in this series. The girls lez out as expected, but each 'daddy' fucking their own 'daughter' was a new wrinkle. They 'complained' about it for a moment and then got into it. This was from a regular porn company, not some low-rent thing, with good production values.