I came back home to my house to pick up something that I forgot in my room . When I opened the door to my room I couldn't believe that my stepson was looking inside of my panty drawer and to top it off he had one of my g-strings wrapped around his cock as he was jerking off? You should of seen the look on his face when he saw me walk in. I had him continue jerking off as I told him what a pervert he was but in some twisted way it turned me on to see him standing there in front of me with his big dick in hand. I was nice enough to give him a "helping hand" here and there as him and I took turns stroking his dick and preparing it to shoot it's load all over my ass. You won't believe what I am going to make him do with his cum once it's splattered all over all over my big ass. I am going to make him clean it up with one of those panties he was jerking off with and save them so that next time he is feeling like a pervert he can get the panties out and stroke his dick as he sniffs those dirty panties of mine. After all isn't that what he has always wanted?