A Breeder's Cock

John definitely had to give his mother a cock to replace the vagina she had at the moment.

But he didn't want to give her a normal penis, that would be too easy. No, he needed something extraordinary, magnificent. He flicked through his mental catalogue of porn to see what would fit.

Aha!

With a sly click, he watched as his mother's skirt started to lift, something new and large growing underneath as she bustled about the kitchen, not even noticing something was wrong. There was a great ripping sound, and her panties fell to the floor, unable to contain the growth. Soon, her 18-inch cock fell down to her knees, flaccid but starting to stir against the fabric of her dress. A moment later and two grapefruit-sized balls hung down, filling with vast amounts of seed. So potent, even the slightest whiff could get a woman pregnant.

John stared at his handiwork. His mother's cock was incredible, long as his arm and twice as thick. He watched as she absent-mindedly rubbed along its length, until it climbed and nestled between her sagging tits. Her balls increased in size as they were pumped even fuller with sperm. Her pace increased and a breathless moan escaped her lips. Her shaft grew longer and longer, her lips suckling against its sensitivity skin as she quickly brought herself to the brink of orgasm.

Then, with a growl, she released. White seed splattered everywhere, four, five large pumps of . A string of it landed in John's mouth. The taste was salty, yet slightly sweet, and entirely addictive, if not for sheer willpower he would have been licking it off the walls. His mother groaned as her tenth and final spurt ended, leaving her in a state of pure bliss.

But that wasn't the end of everything.

A spasm tore through her body, as new, powerful male hormones flooded through her bloodstream. She roared as every muscle began to tighten and distend, growing larger, stronger, toughening up her body in every way. Her overweight belly became a rock-hard ten-pack, her body growing in height as it did so. Her breasts were huge, pert boulders of muscle. Soon, she looked less like his middle-aged mother and more like some bodybuilder bombshell, a mountain of veins and hard packed flesh.

And yet she acted as if she'd always been so large and strong, moving with grace and ease, in complete control of her own power.

John grinned and a pulse of lust ran through him.