Each one of his new penises grew to eighteen inches in length and more importantly, they became prehensile. Mike could control them as easily as he could control his fingers. He also discovered that he could change the texture of the dark green skin. He could create ridges and bumps and indentations in different sizes over each of the three and all could be independently controlled. Each of his appendages had a hole, but the middle one had a larger hole that had a long, thin pointy shell pink tongue-like protrusion about a quarter inch in diameter that snaked in and out on command. The new sesory organ was covered in a pearly white gel which seemed to function as a lubericant. The other two did not seem to have these 'tongues'.
Mike realized that the new organ that flicked in and out did indeed provide his mind with a sense of 'taste' similar to his existing tongue, but with this 'penis-tongue' there were more than just the basic four flavors. His human brain didn't have names for these flavors yet, but they were vivid in his mind.
Mike felt his smooth cocks and changed the textures experimentally.
"Ribbed for her pleasure!" Mike remembered from a condom ad.
Mike got a sudden jolt that made him feel ill as though he'd been kicked in the groin. His testicles were swelling. His scrotum looked extremely bloated. He felt changes in the testicles and reached down with a trembling hand to touch them.
His balls were growing and in the process, fusing into one baseball sized testicle that was attaching itself within the scrotum to the underside of each of the three penises.
All of Mike's pubic hair was falling out to be replaced by a bright neon orange fur. Small bright electric blue dots in high contrast to his now green groin were spreading over his genitals and the green skin and with bright glowing blue dots was spreading out from his groin, down his legs and up his torso. Where the skin changed, the hair was replaced by silky orange strands.
Mike was really beginning to panic!