I'm your step sister and mom tasked me with taking you to the dentist which is terrifying to you. I begin looking for you and sniffing you out assuming you were scared so you ran to hide and mess your diaper. I find you and strap you down to the changing table after making you squat to finish getting everything out. I start changing your diaper teasing about how scared you are of the dentist who is moms friend and super mean. Once we get you changed, it's time for the dentist. I walk in to find you on the couch making another messy diaper cheeks stuffed full of cotton balls. I carry you back to the changing table and atrap you down again teasing about the pics and vids I took of you scared at the dentist to show mom. I tease you how you obviously peed while she was working on your teeth and notice your pee pee starts to get hard. I stroke it and tell you to cum while teasing you about your chipmunk cheeks and how scared you were at the pretty dentists office. You cum all over you belly and I finishing changing you leaving you strapped to the table a and still covered in commies. I walk out and flip the light off laughing.