Martin woke up first, he was covered with an insane amount of his own fresh cum. He noticed that another guy was next to him, naked. It took him a little longer than usual to recognize his friend, but when he found out he tried to wake him up.
Jack woke up with a strong headache, the world was spinning in his head and for a brief moment he ignored he was naked in a pool of his own milk. He rubbed his forehead for a moment, showing off some of his newly grown muscles in the process. A minute later he noticed the other naked guy next to him. It has to be Martin, he has no doubts.
Martin stood up despite he stumbled a little trying to get used to his new frame. Jack had the same problem, but they managed to be face to face. Words weren't necessary to tell each other how impressed they were of they sudden change, the so called "instant puberty". Martin watched at his friend for a little, exploring every carve of his new physique through his eyes until he meet with Jack's crotch where he had grown a dense bush of pubes and a decent set of dick and balls.
Jack noticed the same on his friend and immediately looked at his own package. It was different, it felt different but he liked it. He felt big, powerful, heavy and manly. He smiled. Martin smiled back. Then, without saying a single word, they agreed to jack off again. Like gunslingers, they wiggled they fingers for a second before they took their pistols and rubbed them vigorously until they were as hard as poles.
Moaning, panting, sweating. Nothing mattered to them while they enjoyed the delights of adulthood once again. However, this time they were not alone, someone was walking downstairs and soon they will meet with a new surprise.