"Lift your hips just a little bit," the man said, and Scott complied. He felt a hand push in between his groin and the blanket and hook his stiff penis. It was pulled it around until it lay comfortably against Scott's abdomen. The feel of the stranger's fingers sent erotic shivers through Scott's sex. When the man slid his hand out, Scott began to shift gently side to side, to provide some relief to the tautness. "No, not yet. You need to stay still. We don't want to get ahead of ourselves."
The next thing the man did was to pull Scott's buttocks apart, gently, but as wide as possible. "Displayed," he said, and then let go. "Hidden." He did it again. "Displayed. Hidden." Scott's cock throbbed at the objectification. His breathing accelerated.
"OK, now I want you to pull your knees up to your sides. Stay as flat to the ground as you are able without pain. Don't stress to much here." The man touched the strong ligaments that held the front of Scott's thighs to his pelvis. "If you were seven years old you could stay flat to the ground but you're not, and you'll be in this position for a while." Scott adjusted himself until he was comfortable, but in an embarrassing situation. "You need to feel very exposed. Just imagine what I'm seeing from here." The man put a thumb on either side of Scott's asshole and pulled it open. Scott pressed his forehead into the sand underneath the fabric and focused as directed. The delicious humiliation caused a spasm in his lower abdomen which the man could feel, as he had spread his hands there. He pressed Scott with his fingers appreciatively. Scott felt like he was melting.
"And this is good." The man rubbed Scott's cock lightly back and forth where it just touched the rough terry cloth of the towel. "It will help keep you on edge but won't be enough to bring you off." He turned his hands so the backs were against Scott's penis and drew his nails slowly and lightly from base to tip. The touch was tantalizing, but the intimacy was overwhelming.
When the man pulled back, Scott braced himself for a painful assault, but instead the man just gently inserted a single lubricated finger into him. The physical sensation was hardly perceptible, but the surge of emotion was like an ocean wave. It was as if his whole body, except for his genitals, was melting with surrender.
Then the man pulled out and inserted two fingers. This stretched a little but was not really painful. He twisted his hand and bent his fingers so that he could press into the front wall of Scott's rectum. He moved about until an erotic thrill shot through Scott, causing his thighs and abdomen to convulse visibly. "Ahhh!" The man executed this wonderful maneuver twice again with the same result. Scott was astonished.
Then the man inserted three fingers. The pain was distinct. And it bordered on severe when the man brought his four fingers together and inserted them up to the last knuckle. But it was welcome pain. Scott wanted to be split in two.
Finally the man came into him with his cock. It was not quite as big as the final four fingers, and it was lubricated, and the man pushed in slowly, slowly, until his body was pressed against Scott's buttocks. Scott was so filled that it was as if blood were being forced into his erection. His breath became shorter and shallower as the man moved in and out, in and out, and finally came and collapsed on Scott's back. Scott could feel the roughness of the late afternoon stubble pressed into his shoulder. When the man pulled out Scott felt bereft.
After he had regained his breath the man told Scott to turn over on his back. When Scott complied he was struck by how vivid the breeze felt on his cock, now that it was free and standing up just a little from his belly. He raised his eyes to look at his friend, but the sun was directly behind him and rendered him little more than a silhouette. When the man shifted from one side to the other, or lowered his head, the sun shot directly into Scott's eyes and he had to cover them with his arm.
The man knelt beside Scott and leaned over to kiss his cock. Just lightly, along the side. Then he inserted his tongue in the tip. Scott looked forward to a blow job, but instead the man grasped Scott's penis in one hand and pushed gently up on his balls with the other. The increased tension almost made Scott explode, but that didn't happen for another few moments, as the man rubbed his hand up and down in perfect rhythm. Scott's hips bucked, as if he had some place to aim for, but he was bare and open to the stranger's gaze. He reveled in being so displayed at his most vulnerable. When Scott came, his semen shot all the way up his chest.
As Scott's breathing slowed, the man took a small towel from his own beach bag and wiped Scott's chest and belly. Scott lay there, with his arm still over his eyes, until he detected a sudden drop in the temperature. The sun had finally dropped below the top of the dune. Scott removed his arm and looked for the man. There he was, almost at the crest of the dune, his back to Scott, and then he disappeared down the other side.
Scott lay on his towel and didn't bother to put on his trunks before he allowed himself to drift off to sleep. Maybe another benefactor would wander by.