I ended up teaching the job to Ria, a new office lady with a big ass and a bit of a natural. I was excited to take care of this cute new employee. One day, while working overtime alone with Ria, I got a full erection at the sight of her plump ass sticking out from her tight skirt. I knew it was wrong, but I immediately inserted myself into her from behind and came inside her. I regretted doing it, but the next day I was grateful to Ria for acting like nothing had happened, but I just couldn't resist the sight of her big ass...