So for anyone who has not been following I have been obsessed with my sister lately ever since I heard her masterbating through the bedroom wall I don’t know if I have previously stated but I am also bi I’m so horny that I will fuck guys and girls and my sister knows this. I have recently managed to give her a dildo made from a mould of my cock which she has been enjoying a lot lately. So the other day she came into my room and closed the door behind her then sat on my bed and I can’t tell you how many times I have imagined things starting just like this so of course my cock instantly reacts and springs to attention but she asks me if she can talk about something very personal ( agian making my cock throb ) and begins to ask me about anal sex and what it’s like and how to go about it as she wants to try. Once she is done asking and I pick my jaw up off the floor I begging to tell her the ins and outs of it and what I do and how I started and I manage to ask do you have a toy you can practice on before you try the real thing and she proceeds to go and get the dildo I made her and come show me. So I have a look and tell her it’s a bit big to start with but once you warm yourself up it will be really good and she tells me it’s new and she really likes it and how it feels( I almost came in my pants ). I laughed and said it reminds me of my cock actually with a big grin on my face and she blushed a little then I adjusted my cock because it was about to bust out of my shorts and she looks down as I do it and she can see I’m hard and she can totally see the outline of my cock through the pants. So she gets up gives me a hug and says thanks for the help and leaves as soon as she closed the door I pulled my cock out and shot a load within two strokes know she is going to try anal with my cock now as well and I have planted the seed of my cock looking like her favourite toy