Since the chick came for an erotic massage, she expects to be whipped. Here she gets all the muscles and body prepared for intercourse, rubbed with oil for better gliding. And to thank the masseur with her mouth - it's cozily. Let her husband think she's at her girlfriend's house.
It was nice of my sister to come over and check on my brother and relieve his tension. Yes, and the ass is now working - you can safely go on a date. With such an ass, she will have more admirers. She will still thank her brother!