Step-Mom's Road Trip Turns Into Sex with Step-Son

Step-Mom and step-son are on a trip to visit family and stop at a motel to rest. Unfortunately there is only one room with a shared bed. Step-Mom and step-son are ok sharing, why not? Step-Mom starts getting her pajamas out and finds old lingerie in the bag and her step-son convinces her to try it on. He asks to see. She is shy and embarrassed but he convinces her and takes pics to show her she looks fine. He touches her breast and she is shocked! HE then touches her pussy which gets her all wet. She tells him to get down and lick her. She gets so horny she blows his big dick. When he fucks her, she wants it rough. Doggystyle, oral sex, missionary...creampie! He cums twice!