Your Step Sister has just found out your secret, she knows that you wear diapers! She humiliates you over needing and wearing them as an adult. Then she suggests she could tell all her friends, or instead you could just let her wet one of your diapers for you. Next she puts you into the wet diaper and teases you over not being able to cum without a diaper on. She decides she's going to help you fill your diaper with cum by sharing her magic wand while humping and grinding against your soggy diaper. After you have finsihed she says that you need a change and mentions that her boyfriend could do it for you. However she has another naughty diaper she wants to change you into for next time. (This video contains humiliation/degradation)