Years ago I lived near a group of optional friendly beaches on the west coast. One in particular, does not exist anymore because a new land owner would not allow access to the beach anymore, was a clothing optional campground. 

So, one day I found a nice semi-secluded area and laid out to soak up the sun. Another female beach goer finds the same patch of sand, after a few minutes she begins to play with herself. This get me a little excited, so I join her in playing with myself too. I reached a big O right there on the beach. 

She was not done either, after a few minutes I notice several hard cocks standing over her as she continued to pleasure her sweet button. I watched in awe as the pack of hard cocks are being stroked in each hand, another deep down her throat, one in each pleasure filling holes, others were rubbing theirs on her feet. As one released their hot jizz, another would take over and keeping the train going. I just stared in amazement as this went on, too scared to join, too excited to stop rubbing myself either as another and another  orgasm shook my body.

After it was all over and all those cocks were gone, I finally got up the nerve to try to have a little us time. Alas I was too late, her bf said enough as it was time for just them. 

I told myself that if that chance ever cam about again I would gladly enjoy the free grinding session. Sadly I moved not long after, and yearn back to that day. I use that day as my place to go in my mind as I diddle , play with my toys.