She wanted him to do it. The sink had been leaking and needed to be fixed, he should do it. But he wasn't going to crawl under there and do it, so she had to get down there and do it herself. But it was tighter than she thought, and she got stuck....with her ass out! Well, her stepson immediately got hard and started rubbing his dick, of course. So she told him to go ahead and fuck her already so she could get his help getting her out...he was never any help when he was horny!