Your wife is wondering why her only son decided to go out clubbing for his 18th, when he could have stayed home to have some fun with his Mom and Dad. She realizes that he has to grow up at some point, and knows that soon enough, she won't be the main woman in his life when he finally gets himself a girlfriend. You tell your wife that you have a surprise for her, and hopefully it will help her take her mind off her sons absence tonight... You tell her to close her eyes, and she does. She does as instructed and reaches out her hand to touch your cock, but, what she can't see is that it isn't your dick she is touching... it is her son's! You have decided to gift your son his very own Mother for his birthday, and she has no idea. Her son reaches in between her legs and gives her a toe curling orgasm, before she finally opens her eyes... She is livid, and quite obviously upset by what has been done by you both to her. You both can't stop laughing as she makes you aware that she will divorce you in the blink of an eye. She doesn't blame her baby boy though, instead tries to lay all the blame on you. You tell her that you wanted to give your son the gift of losing his virginity for his 18th, and you knew he would appreciate his Mother doing the job. She rolls her eyes, but, decides to continue the ridiculousness. She wan't to make you suffer, so she goes ahead and fucks her son, cumming again in the process. She is so angry with you, and cannot express enough how much she hates you for this, but she also can't hide her moans, as her son is so much bigger than you are, and he can make her cum harder. SHOT IN THE POV FROM THE SONS PERSPECTIVE, AND HAS A TWIST AT THE END.