Pervy neighbour caught by couple!

What's an unfortunate fetishist to do when caught right under the bed of the object of his adoration, the gorgeous and juicy spouse of his gloomy neighbor? Make sex with her, of course! But what if he's caught in the act by the gloomy neighbor himself? Make sex with his wife! Sounds like science fiction, but that's exactly what happened to the hero of this story. All because the husband turned out to be an impotent man who loves his wife very much.