Derrick woke slowly, feeling dazed and shivering in pleasure. It took another minute to realize the pleasure came from masturbating himself, far more intense than he had ever experienced before. He was still in the beautiful glade, though the nymphs seemed to be gone. Sitting up, he felt muscles pull oddly and had to brush back hair that fell in front of his eyes with his free hand. He felt different - really good, but not the same as he had been. What had the nymphs done to him?
It only took a glance down to see the biggest change, literally. The heavy, almost rigid shaft that his right hand was continuing to stroke had to be a foot long at least, and more then three inches diameter at the base. A heavy, loose foreskin aided his masturbation, adding tot he thickness. Behind the base of his penis was an enormous, swollen sack that looked stretched taught over testicles large than golf balls. Their effectiveness was illustrated by the steady stream of thick semen that dribbled from the end of his pulsing cock. The overall package would have been insanely oversized between the slender legs of a 15 year-old boy, but was only ridiculously oversized compared to the muscular hairy legs of an adult.
The shock was enough for Derrick to stop pleasuring himself and crawl to the still pond in the middle of the glade. His eyes widened at his reflection. The face was still his, just matured a few years. He guessed he was in his late teens or early twenties, his hair now brushing his shoulders in a thick mane that somehow looked both untamed and perfect. Smooth muscles rippled in his arms and chest, the perfect physique of an athlete without the ungainly bulk of a weightlifter or football player. He looked like one of those famous statues, David sculpted in flesh. There was not a single scar, not a blemish. He was, without doubt, the most handsome male he had ever seen anywhere. A pleasant shudder reminded him of the partial erection, which spewed a small spurt of semen, then resumed the trickle.
Derrick stood up, reveling in the smooth and effortless movement. His hair fell away from his eyes to naturally frame his face, and he twisted to admire himself in the water. The partial erection would have made him self-conscious before, but now he simply rubbed the huge shaft absently. He had no trouble bringing it to full attention, arching back with a grunt as a much more impressive 15 inches exploded with a jet of cum that landed on the far side of the pond. Panting happily, he found that the partial erection was apparently his new 'relaxed' state, and that even after the large release, semen continued to drip from his cock.
"Are you pleased with our gifts?" A sultry feminine voice drew Derrick's attention to the trees opposite the pond. One of the oaks shimmered, and then an incredibly beautiful girl, all green stepped out and smirked at him. A nymph - he did not know if this was one of the three he had been with before, but he found he did not care. She began approaching, gliding smoothly around the edge of the pond. He was reacting predictably - back to full erection, heart beating faster, mind focusing on sensual needs.
"You sought pleasure from us, now you will give pleasure, always." The nymph chuckled as Derrick started to pant. "We have made you perfect for us, though perhaps more than any human could accept. No matter - physical contact with you will be sexually fulfilling for any being, male or female, human, monster or deity. You are lust, passion, sensuality made flesh, perfection frozen in time. You will never change, never get older, never get sick, never want for anything. A life of pleasure without care, without responsibility. This is our gift to you, our lover."
It was hard to think of anything but the throbbing need, yet that powerful desire was what alarmed Derrick enough to hold back, at least for a moment. Constant pleasure, intense orgasms, a life of pure sensual delight. It sounded incredible, but is that all he wanted from life? Then again, this was just for the two weeks of his vacation, right? Part of his mind was shouting a warning that the nymph was not talking about short-term commitment, but another was shouting even louder that he would be crazy to ever give all of this up.
Slinking close, the green girl wrapped her arms around him and lifted herself up in preparation for impaling herself on Derrick's once-again rigid penis. It was already almost too late to pull away, but why should he?