Part of the following morning was spent getting ready for a day in the dunes. Tom had told Dan that it was mostly nude sun bathing and to be prepared to come across male to male action. Father and son interpreted the statement, not as a warning, but with excitement and curiosity and both were eager to get there.
Today, they felt they needed to put lots of sun cream on if they were going to be naked for most of it. They decided to do each other's backs and plenty was needed for their bums, as they probably hadn't seen daylight for ever.
Dan, humorously reminded Alan that he hadn't done this to him since he was a baby when he had nappy rash. Alan spent a long time massaging the cream into his dad's bum, enjoying every second. By the time they had both finished they had erections and a playful pink sword fight broke out, banging their cocks together. They were now, more sexually relaxed around each other, but in order to be ready to go out they needed their cocks to deflate.
After changing the subject and getting dressed, they were able to make their way to the large area of dunes. These sand hills had dips and hollows all around them and it took a while to find a vacant one. Everywhere they went there were naked men in various states of arousal, often doing things, either to themselves or to others who were with them.
One hollow had three men in it. One was being sucked off by another who was on his hands and knees, who was in turn, being fucked by the third man. Even though Ron and Dan were seen by them, they made no attempt to either stop or cover up but rather waved for them to come down and join in. They declined the offer but stood transfixed staring at the scene with ever increasing bulges in their shorts.
Nothing was said as they continued their search for a place to settle, each contemplating the ultimate in gay sex, the how, when and where, as well as who with. For familiarity they, independently had more or less decided that it should be with each other, if and when it should happen.
Eventually, after finding a spot they laid out their towels and things, to make themselves more comfortable. The sights they had seen caused their erections to return and both had difficulty getting their shorts off, but off they came, making their cocks bounce in the air as they slid over them. As they settled, the conversation turned to what the threesome had been doing and whether either of them wanted to experience it.
The upshot was that they did want to try it and they decided that it should be with each other, so that if one of them wanted it to stop, they could trust the other to comply. The next question was when they should attempt it, but before they agreed another man appeared in front of them.
He was naked except for a towel around his shoulders, held there by the strap of a small rucksack he was carrying. He waved and they waved back. He obviously took this as an invitation and came over to join them. He called himself Lars, he was Scandinavian, tall and blonde and closer to Alan's age than Dan's. The pair were intrigued by the size of his cock and looked at it with envy.
Lars, seeing them both staring, began to wave it in front of them while the introductory conversation was taking place. The moment he discovered that they were father and son his cock rose up to meet his smile. The boys invited him to lie between them and both stroked Lars's body, making their way to the flagpole jutting out from him. Seniority took precedence as Dan was the first to wrap his mouth around it.
What followed next was an orgy of sucking and licking as they took it in turns gorging on Lars's cock. Sometimes they both went at it at the same time until Lars's could take no more. Then he knelt between them and wanked their cocks, one in each hand. If anyone had seen them, they weren't aware of it, lost in the sexual pleasure of edging.
All three of them were saving themselves. They wanted to enjoy the sensual pleasure for as long as possible but eventually Lars left to seek other people to have sexy fun with.