One summer when I turned 18, my grandmother asked me to spend the week-end. She had short hair and stood 5'3" tall. She had 29DD breasts that did not end. Every time I saw her my 8" cock would get hard and made my pants look like a tent.
She would talk to me but her eyes were glued to my cock. She would never say anything about it but I know she liked it, because she was always looking at it and then her nipples would show though her shirt. She was always bra-less when I was there but I know she has bras.
Every night before going asleep, she would come in and tuck me in. So I knew she was coming so I stroked my cock until I was rock hard and made a tent with the blankets. I did this every night. One night she came in with a teddy and I could see her whole body. Her pussy was shaven and her tits were awesome. She asked me if I found her sexy and I said that she was the sexist women I have ever seen.
She gave my cock a squeeze and I almost came. She then went out the door. This time at grandmas was special because my 20 yo first cousin Willa was staying there too. She was 5'8, long blond hair and huge tits like Grandma.
My Grandmother was out shopping and Willa told me that she did believe in taboos. So we started kissing and I felt her breasts. The car came into the driveway so we stopped. At dinner Grandma told us that she is a nudist and would like to walk around nude if it was OK with us. She said she loved looking at men. We said it was OK, so grandma stripped and sat at the dinner table nude. She said it was OK if we joined her and Willa took off her clothes. I had a raging hard-on and took off my clothes. Grandma told me I had a beautiful cock and so did Willa.