My Grandmother

I'm Glen 19 single, I live my parents and younger sister. I have a separate bedroom from the house over the garage, it has it's own bathroom. But I have join the rest of the family for meals in the house. Earlier this year a savage storm hit our region and caused a lot of damage. This meant that for 2 weeks I had to share my room with my Grandma Ruby widow 60 as my other sister and her family had to move in with us and the house was full. Ruby also had to move in with us while her roof was replaced and house repaired. I had a big lounge in my room and I slept on it, Ruby like to have a drink. She liked gin the best the third night she was sharing my room, she got smashed on gin. She went to bed early around 8pm and I went to bed about 2 hours later. I awoke hours later to Ruby leaning over me, I asked what was wrong. Nothing she answered, then she added I woke up and I'm feeling very horny and thought you might help your old granny out. How I asked, By fucking me silly she replied. I'm your grandson I replied, So you don't love your granny enough to fuck her then she said. Grandsons aren't suppose to fuck their grannies I answered. Bullshit there a lot of people who fuck their mothers, aunts, sisters and grandmothers. Not to mention their cousins, it not a bad thing as long as both are agreeable she replied. I'm not a sure I know what to do I answered, Your a virgin, well this is your lucky day she replied and then added I show you what to do and you will get confidences as well as a fuck. What about the family, if they find out I'm in big trouble I replied. I'm not going to tell them are you she asked, No I won't I replied. With that she pull back my blanket and told to join her in the bed, I got up and started towards the bed. Get undressed she said and I did, I laid naked on the bed and she got between my legs and stated to suck my cock. I soon felt I was going to cum and told her, she swallowed it all. Then we changed place and I done what I was told and she got me hard again and told me to mount her. Which I did, after I came again inside her we fell asleep together and the next morning on waking up I went for a shower and Ruby came in shortly after. She asked Did we fuck last night or did I dream it. Yeah we fucked last night you asked me to fuck you I replied. That's alright she replied. We fucked the next night as well, this time she was sober. I've started to look at my younger sister sexually, but haven't yet got the courage to ask her for sex. I also watch my mother changing in her room thru the window from my room. I go and see Ruby 3 or 4 times a week.