Image taken from Derek Bolts' twitter.
It is a nice day for a swim. You are out at a nearby beach enjoying yourself in the water. You can feel the comfortably warm sun on your skin, and nice cool water enveloping you.
You are in your well-used speedo, showing off your skins. Your body might not be in the best shape, but you are comfortable enough in it. The cloth is slightly loose on you, stretched out from its age.
Not that you worry about anyone seeing you indecent, it's a quiet day on the small rocky beach. You saw only a couple of other people since you arrived. And they have since gone out of sight.
Your modest cock twitch and harden at the memory of the couple you witnessed. A pair of huge muscle-bound hunks, wading through water like bulls in a rut.
Their strong, wide beefy bodies were as big as the biggest body builders you have seen. Their bodies were covered in layer of sexy hair, deliciously decorated their meaty pecs down through their muscle guts, trailing down into their tight swimwears.
Your hand is groping your hard-on through your speedo at the arousing memory when you noticed you have subconsciously moved toward the rocky outcrops you last saw the muscle bears disappeared to.
You are about to turn around to head back, not wanting to be caught fondling yourself in public, when you caught some musky smell in the air, and some white-ish liquid floating and dissipating in the gentle waves. The scent you caught is a mix of masculine odour, funky but familiar smell, and a hint of sexy musk.
You are a bit daze when a sudden burst of horniness hit you. Your already hard cock stiffen even more, forming a visible tent in your speedo.
You then feel a weird sensation in your balls. You feel like they are ballooning up between your legs, sending pleasurable jolts through your body.
As those pleasurable jolts course through your body, you begin to feel your body tenses up and relax, then again, tense up and relax.
Each time your body tense up, you can feel the muscles tighten, and engorging, beefing up with each pulse.
Pleasure-filled gasp escape your mouth as the wonderful sensation fill your mind with lust. Your pecs grows into two meaty shelves, shoulders bulge into round hard boulders.
Your arms flex into muscular mountains, abs bundling into solid six packs, thighs and calves beef up into solid pillars of muscles.
Your ass balloon up into delicious muscle buns, and above your cum-filled balls your hard cock slide out over your increasingly tight swimwear, longer and wider than it ever was.
You then feel a crawling sensation across your body, particularly on your limbs, chest, gut, and your jaw.
All over your body, you see dusting of hairs spread into sexy delicious masculine highlight over your bulging muscles.
Then you see your reflection in the water. The sight of jaw covered in manly scruffy beard send you over the edge, cum erupt out of your cock and arc over you.
One, two, three, and still repeating pulse of orgasms cover you in sexy white batter. You mind blank out as you feel nothing but the pleasure-filled bliss of your releases.
Your cock finally calm down as your post-orgasm high slowly fades. You are exhausted from the unbelievable moments of growth and sexual release, yet the horniness doesn't ebb away, only momentarily placated.
You take a moment to gather your thoughts and observe the changes to your body. You have become a specimen of manliness. You feel unbelievably powerful, sexy, and virile. A muscle hunk ready to take the world by storm.
A powerful urge begin to fill your mind. A desire to fuck, to mate, to breed and be bred, to grow, and most of all, to share this wonderful gift.
Manly grunts and sounds of lustful movement reach your ears, reminding you of the two objects of your lust.
A sexy smirk appears on your face as you slowly moving through the water toward the source of the noise. Looks like you will be able to give your new body a test ride.
Your cock already hardening up again at the thought.
My first caption! I hope you enjoy the story. Feel free to comment any suggestions or criticisms. English is not my first language, but I wish to improve.