Your stepBrother took a hard hit to his testicles during basketball practice, and now his poor balls are swollen and aching. Your loving stepMommy immediately insists on examining his injury, claiming her gentle healing massage will make the swelling go down... but as her soft hands work your stepBrother's private areas, his penis grows impossibly thick and hard. stepMommy can't hide her excitement; she's absolutely fascinated by how big her boy has gotten, and soon her nurturing care turns into something else… right in front of you.
stepMommy keeps reassuring you that she loves you both exactly the same and she is only doing this to heal your stepBrother, but as she bounces on his cock, you catch the doubt in her eyes... and you both realize that maybe her love isn't so equal after all.
-Custom script, no names