A young teenager named Joseph was sitting around in the grass outside when the meteor struck the ground. He jumped as the meteor hit the ground, small rocks flying all over as it struck the grass. One of these small pebbles hit Joseph, passing the newly found virus to him. He stood in shock as he looked on at the massive glowing rock for a moment before deciding he's had enough sitting around outside for one day.
When Joseph arrived home, he began to feel hot, especially down in his nether region. He uncontrollably tore his clothes off, and began masturbaiting so hard it looked like he was going to destroy his cock. He immediately released, his cum spraying all over the couch in his living room. Despite this, Joseph went for another round, continuing to jack off several times before he began to notice changes in his skin. He looked at his arms to see some of his skin has flaked away, revealing veridian scales underneath. He didn't seem to care, continuing to pump out load after load of his seed, each load bigger than the last. As he squirts out his semen, more of his skin flakes away, revealing more shiny emerald scales, his muscles becoming thicker and toned, though belly up and down are tan colored. Eventually the scales go down to his legs, and they begin to meld together. He begins hissing as his tongue becomes forked, his face pushing out as his skin rips away to reveal a reptile's snout, hissing in pleasure as his cock begins to grow, soon becoming almost a foot thick and several feet long. Joseph's balls fold into his crotch as they become bigger too, only barely bulging his scales out slightly like interior watermelons as his cock begins to reside in a scaly slit. He hisses louder, continuing to jizz all over the living room, turning it into the most ideal lair for a sexual animal.
As Joseph jizzes more and more, his legs completely meld together, the skin flaking away to reveal he had grown the long body of a snake, thick and long, about twenty feet long. The hair and skin on his head fall off, revealing a big cobra hood around his head and blood red eyes. Joseph hisses one last time before his massive cock jizzes out the last of him creamy white human cum, soon a very thick white semen bursting out instead. He hisses in pleasure as his ejaculations come to an end, and his entire body was that of the mythological naga. He had thick emerald colored scales, his belly up and down colored tan, with toned and thick muscles on his arms and abs. He had crimson eyes that could make anyone obey him, and had a cobra hood that signified his loss of humanity. Besides being a snake creature. His cock was a little over a foot thick and wide, several feet long. It was reptilian in nature, and was always dripping thick pre. His balls bulged out like watermelons, inside his scales and his cock now could hide in a scaly slit.
Joseph smiles and slithers about the mess he's made, deciding he will turn it into his main lair. He begins to pump his huge dick again, this time taking his time to pleasure himself. When he cums, he blasts out an amount of semen so large it covers the entire wall he aimed at, even dripping onto the floor at that point. Soon, a thick and completely unavoidable musk washes over the room. Joseph hisses in pleasure as he breathes in his own musk, his cock becoming stiffer. He smiles and begins to cum more and more all over the house he lived in, until the entire house was dripping in his semen. The floors, walls, ceilings, furniture, windows, nothing wasn't uncovered. Joseph slithered around easily in the mess he made, chuckling to himself as the thick musk drenched the air around him to the point that it was almost all he was breathing in, and a single whiff just made him cum again. All that remained was his desire to fuck and spread the virus.
After this, Joseph only wondered what to do next. He didn't live with anyone else since his parents died, so maybe he could go visit someone important to him, or someone random. He could go to all kinds of places, infecting people as he went. Or he could just continue to enjoy himself. He decided to...