Your babysitter has no idea you wear diapers, and your Step-Mom left some confusing instructions. She thinks you’ve got a baby sibling, but quickly realizes they are for you, and you’re wearing a big pink diaper with bunnies all over it. How embarrassing! But she is more curious than weirded out, and she decides to try one on herself. She actually likes it, and is starting to get excited by how it feels against her clit. She climbs onto you, rubbing her diapered clit against your cushy crotch until you both cum together.