After dumping him, she decided that she was going to become the best sexual partner in town and began taking classes from a local sex expert. The courses are not cheap and she has to buy a number of special toys to practice on. She quickly spends all of her extra money, but is happy with the results so far. One afternoon while practicing some new oral sex techniques on a variety of toys, she is surprised by her stepfather who is home early from work. He is stunned by the spectacle and Mary is embarrassed. She is also worried that he will tell her mother. Quickly coming up with a plan, Mary begs him not to say anything and in return she will show him the things she has learned. He is not about to refuse a deal like that and quickly takes out his cock. Mary can see that he is much bigger than the toys she is trying out or her ex-boyfriend, but is wet with anticipation as she takes his long dick into her eager mouth. Pleased by his reaction to her oral skills, she climbs on top and takes her mother's husband's cock into her pussy. She is wet and tight and happy to see that he is able to last more than a few strokes inside of her. As she cums on his cock, she wonders if maybe the problem wasn't with her, but with her boyfriend. He pulls out and shoots a load all over her face, reiterating his promise not to tell her mother as long as she comes back to show him each new lesson she has learned.