She shoves his face into her pussy to eat her out, bringing her plan to full fruition.
It's all just a way to keep him guessing, though. Later, Madi finds Spikey stroking his salami as he plays with her underwear. She immediately begins masturbating to the sight. When Spikey realizes Madi is there, he tries to disengage, but Madi has other plans: She wants him to fuck her instead.
Returning to the room a bit later, Molly is dressed as a sexy teacher. She says she's going to try a physical approach to demonstrate finance to Nathan. She explains the system slowly and carefully, sucking her stepbro's dick for a proper example. When Nathan offers to make a deposit into her pussy, Molly agrees that she's taking new customers.
Instead, they give her answers full of innuendo and crack sexual jokes. Alex even goes so far as to say he wants to fuck his swap mom and his swap sister, Sera Ryder. Lexi claps back at Alex and Damon that that's not what swap family is about. She and Sera put out there that they both just want a normal swap family with no sex. The boys have already made up their minds that they're going to get into the girls' pants, though. Lexi tells them that they can try, but maybe it'd be easier if they did some nice things for herself and Sera.
Steve Holmes isn't far behind his swap son in discovering the same thing. The girls are in the living room laughing as the guys storm in to confront them. Steve points out that Jessica isn't supposed to touch her swap son's dick and that he's concerned about how much Liz seems to like her swap brother. The girls double down, claiming neither of them feels that they're getting enough attention and that they're going to keep being bad until they feel otherwise.