Cory and Luke are sitting at their kitchen table with Cory's sister, Vanessa, at the opposite end. Vanessa is sitting there in a green dress biting her nails and spitting them out, which is a habit that she's had since she was a . Cory and Luke are both disgusted by this habit and are eager to get her to stop doing it. Vanessa explains to her sister how she has an oral fixation and that's why she's never been able to stop this bad habit. Cory goes off to work, but before she does, she begs her husband to get her to stop biting her nails through a psychological technique. Vanessa tells Luke that maybe if he stuck his dick in her mouth, then she would be able to stop biting her nails because her mouth would be preoccupied... Luke hesitates for a moment but once Vanessa spits her nail at him, he decides to give it a try! She pulls her dress down, revealing a matching green bra, and then she pulls her bra off as well. He starts to play with her big tits which gets his cock hard pretty quickly. She starts to suck his cock while moaning "I love having something in my mouth!" Luke tells her that he hopes this will cure her problem! She sucks his cock until he cums deep inside her mouth. Once he takes his cock out of her mouth, she puts her finger nail back in her mouth! Luke is going to have to find another cure for his sister-in-laws bad habit...