It must have been about 4 years ago when this actual event happened, and I wish things like this would happen a whole lot more often!
My 'mia-noi' (or 'mistress') and I were heading for the beach for a bit of relatively-private outdoor sex. We found a spot on a long and deserted beach stretching about 3kms, with a nice fur-tree lined backdrop. We both got naked straight away, and I suggested taking a couple of pics of my mia-noi before we started building up to what turned out to be a marathon fucking session. When we were both happy with the pics and had erotically rubbed sunscreen all over one another, we entered the cool turquoise sea. After a bit more foreplay, we were so worked up that we couldn't wait any longer to start fucking like bunnies. IMHO being suspended in salt-water while fucking are two of the best experiences it's possible to have with your clothes off!
While we were going at it hard*, a man appeared not too far away from the tree-line. We were both a bit surprised, so we disentangled and tried to look as inconspicuous as is possible when you're naked and stood in clear, chest-deep water. As the man walked past, he kept his eyes riveted on the pair of us. The further he went past, the more he kept craning his neck back to keep us within his sight, until he was too far away to really see us any more. We were both still achingly horny, so we got to it again. As we watched, the man did an abrupt u'turn and started back towards us again. We decided that he was trying so hard to get some cheap thrills from watching us, that we continued with our fuck'a'thon, if not just to help him out. He stood and watched us from the shoreline with a pronounced bulge in his shorts, which he started groping with lessening bashfulness as he watched the two of us fuck.
This went on for about 5-or so minutes before he lost his bashfulness altogether and pulled his shorts down and whacked off for all he was worth, clearly in full view of us two.
A minute or two later, another male started making his way out of the tree-line not far away. As we spotted this other man, the whacking-off-guy looked in the same direction as us and he too spotted the newcomer, but continued to beat his meat nonetheless. We also continued our fucking, seeing as Mr Whack-off didn't seem worried. When the newcomer got within around 10 or so meters from Mr Whack-off, they looked like they were exchanging words, and the guy who'd been wanking put his cock away, but kept a firm hand on his even firmer cock through his shorts, and stayed exactly where he was. The second guy then focused his attention on us as he slowly walked past. He, like the other guy, looked to be around early to mid 30's, and looked to be filling out his trousers with an engorged cock. My thoughts now were shifting from the fucking amazing sensations centered on my cock, to concerns of our safety. I voiced my concerns to my partner, and we decided to stop for a while.
Our intermission had the desired effect on these two men, who each wandered off in different directions along the shoreline. We continued to feel each other up under the water to maintain our heightened state of arousal, meaning we were able to simply carry on from where we'd left off. And we did. No sooner had we gotten into our stride again, lo and behold, a fisherman descends upon us from the fur trees! He didn't pay much attention to us at first, but when it slowly dawned on him what we were up to, he made a beeline to get as close to us as he could without making it look too obvious. It was pretty bloody obvious to us though, and we stopped fucking yet again until he'd moved along.
All in all, around 6 or 7 men interrupted our on-and-off fuck'a'thon over a one-hour period. Both my mia-noi and I are up for a bit of exhibitionism, but just the odd voyeur or two would have sufficed. We ended up finishing off our fuck in the trees, where we at least think we weren't being watched...
* I was supporting her around her waist as she was backed onto my cock in an underwater doggy-style, i.e. her thighs were either side of my hips. you've got to try this one if you haven't already!
