Tanner felt sleepy as his daddy rocked him. No, wait! he was not Tanner's son! he was a teenager, not an infant! But as the now older teen continued to rock Tanner back and forth, the infant felt a dreaded and familiar sensation. His bleary vision saw Derrick's face darken as a beard formed, and Tanner turned twenty. At the same time, Derrick shrank again, dissolving into a thick pool of white liquid. Derrick cried out and dropped the warm mass of sperm, which landed on his crotch. The young man wiped frantically at the mass, then gasped and grabbed the bed as it soaked through his pants and was suddenly sucked into his penis. There was pain as his testicles filled to bursting, and then an eruption as the rest shot back out in a powerful ejaculation that filled the front of Derrick's pants.
Derrick gasped and shook his head, remembering only the suddenly hard on and ejaculation. "Oh, man! What brought that on?" He rubbed his swollen testicles. "Feels like I could do that ten more times!"
Tanner's awareness was strange - he could sense himself, but it was like he was made up of tiny bits that kept moving round. He could not hear, see, smell, or taste, but he felt warm and constantly active. He had no body, and yet he had a million bodies. Slowly, he began to work it out. He had regressed to a mass of sperm in Derrick's testicles! Part of him was already gone, and Tanner realized his time was limited. A few more ejaculations would drain all that was left of Tanner and he would fade out as the last sperm wriggled and died. His only hope was that Derrick would find a female to have sex with, one that could become his new mother.