My step-sister Brianna and I were at home alone doing chores. Since no one else was in the house we were running around in our panties. We were doing the dishes when our step-dad's friend Mark walked into the kitchen. My step-dad had asked him to stop by and check on us but what he didn't know was that Brianna had already had fun with Mark!!! We are very close so she had already told me all about it so when Mark came in I automatically asked if that was him. She had already bragged that he had a huge cock so I had to find out for myself!!! We both turned around and got on our knees. We took tu... Show more