Is this weird?
This story happened to me a few years ago when I was 15. Every year my family and I go out to the country to this family cottage on a lake. The lake is in the middle of nowhere; there is literally no one for miles. And we own a ton of land in that area so there is never anyone on the huge beach. So anyway at this cottage there is no electricity or plumbing so we have to bathe from the lake. This year we happened to be down there at the same time as my aunt and uncle, which worked out well.
So I was walking around in the dense woods that surrounded the lake and I happened to see my aunt walking on the beach with her things for bathing, which we did in the lake. I watched as she took off her red t-shirt and blue jeans. I found a good hiding spot when she took off her bra revealing her large, beautiful breast and her panties, which gave me an instant hard on when she bent over and you could see the delicate folds of her vagina. She walked in the water and started getting wet -- I was in heaven. I took out my penis and started rubbing it vigorously; this was also the first time I had masturbated in a week. It felt so good and it was wonderful watching my sexy aunt rub soap all over huge breast with her big nipples. Seeing her gently wash her pubic hair and slide her hand across her labia nearly sent me shooting my cum all over the tree I was behind. I continued to jerk for a while more until she got out. As she dried off I masturbated as hard as I could it was a great orgasm, that was long needed. I sprayed cum all over the nearest tree dried off then left. I did this a few more times over the break. My aunt would have killed me if she had found out, but it is an experience I will never forget.