With a simple joke, my best friends had sex with my stepmother. Part 4

The adrenaline of sex took hold of my stepmother in front of all my friends who were there willing to satisfy her. Even with a guilty conscience for knowing that her husband was traveling for work, she can barely resist and ends up giving in to the pleasure of lust right there without caring about the presence of her stepson, who accepts everything so as not to lose the friends who frequent his house...