Oups ma belle-mère a trébuché sur ma bite

I don't know what happened. I was walking up to take a shower when I didn't realize my stepson was coming out of the bathroom. We ran into one another, my towel fell down, and somehow I ended up sitting on top of him, with his cock inside of me! OMG, it feels amazing. I just can’t let him know how much I am enjoying it. I tell him that vaginas can be very tricky and I can’t just take it out. It could damage my insides. I ride him for a moment and enjoy myself, but I don’t want to get caught! This could feel so much better if I could just get him to bend me over something. I have him walk with me to the countertop, but I have to make sure he stays inside me. We keep fucking while I tell him the friction is good. It will help him ease out of me. But he warns me that he’s about to cum. I climax at the thought of my stepson cumming inside of me. I cheer him on and let him know that his ejaculation will be the lubrication that we need to get his penis out. My sweet, naive stepson actually b