While we were walking through the woods, my stepdaughter needed to poo really badly. She asked me to keep watch while she relieved herself but I was hard and she wanted to help me out with it. She lowered her jeans and knickers to reveal her care bottom to me and squatted in front of me. She then unzipped my jeans and my penis sprang out in her face. She gave me a great blowjob while she pushed out several turds and peed. I came hard filling her mouth with my cum and she gagged a little before showing me the frothy mess in her mouth. She then swallowed it and made me lick her bum clean.