She accepts to fuck her brother like a bitch in exchange for a big favor

This slut doesn’t find it hard to fuck her brother like a bitch because she has a special plan to profit from it. Her brother comes to her room telling her that his dick is really hard and that it even hurts because of it, so she asks him for some help to see if he can get his hard-on off. She says yes, but in exchange for letting him borrow her car for a long time so she can go out and fuck her boyfriend in the middle of the countryside. The brother agrees and the little slut gets straight down on all fours for him to penetrate her instantly without any warm-up.