The girls decide to get on their knees and pull the guys' dicks out to suck them in retribution for cutting into their beach time. Lana goes for it with Tyler while Lexi gives Vincent a blowjob. The guys attempt to shrug it off and enjoy their burgers, but in the end they can't resist. They admit they're no longer interested in eating, which prompts Lexi and Lana to lead them to the couch for some real swap family fun.
Pushing the guys onto their butts, the girls put on a show undressing each other and getting plenty handsy. Then Lana settles onto her back so that Tyler can fuck her while Vincent eats Lexi out and then does her in doggy. Swapping partners, Lana enjoys a doggy style pussy pounding from her swap daddy while Lexi rides Tyler in reverse cowgirl. Lexi winds up on her back with Vincent plumbing her full of cum even as Tyler gives Lana the same treatment. They are all pleased, admitting this was better than any of their individual plans.