You are Vanessa and Lalo's step-son and you have decided to shrink. Your stepparents were ok with you taking a shrinking potion but had a lot of reserves because they know how many STDs little ones get. They are afraid for your health due to the well-known promiscuity of tiny people. You come home and reveal that you have contracted a dangerous but curable STD. Your stepparents don't react the way you expected. Your step-mother is particularly affected when she realizes how little time it took for you to get an STD. It is unacceptable to her. She wants to punish you. Lalo agrees. He's also incredibly disappointed in you. They decide that the best thing for you to learn your lesson is to become infertile. If you're going to be tiny, then you're not going to spread your genes anymore so that more stepparents don't suffer from their step-son's bad decisions. Vanessa decides they will use their feet to crush your balls. But you quickly realize that all the grudge they hold towards you is reflected in the punishment. They crush your dick and balls with their dress shoes. Vanessa continues with her stiletto heels right on top of his balls. The pain is unbearable but they persist, using your small body to support their entire weight. It's unbearable and painful, but at the same time, exhilarating. They keep stepping on your body, firstly with shoes and socks and then with their bare feet until, out of nowhere, you shrink even more! Your stepparents lose their minds. The potion must have malfunctioned! If they were already angry, now they are… livid! They decide that just making you infertile isn't enough. They want to get rid of you and so they decide to crush your microscopic naked body with their feet.