Alex Mack is visiting his wife's parent, Piper Press, to drop off a muffin tin that his wife had borrowed. Piper is one hot in-law, and she knows it too... in fact, she tells Alex that the last time he used her swimming pool, she noticed that he had a hard-on while staring at her tits!Alex tries to deny it at first, but Piper LIKES that Alex finds her attractive. Since her husband is away on a business trip, and Alex's wife is busy at work, why not have a little fun? Alex says that doesn't seem appropriate, but when Piper takes her massive mammaries out of her top, he gives in to those tempting titties. Alex squeezes her breasts and licks her nipples, and fucks her in a bunch of fun positions... including tittyfucking!