Yes, his older brother

Jacob was on break from his time at university, which consisted primarily of boning hot young co-eds and sorority sluts. An incredibly tall man, blessed with a chiseled jaw to boot, Jacob even possessed an irresistible charm that never failed to make any woman swoon. Life just isn't fair sometimes.

And of course he had a big dick. How else would the package of every man's envy be complete? Most men prior to Josh's reality change measured in "porn inches," citing impressive--and entirely exaggerated--figures such as ten inch long schlongs. Jacob was perhaps one of the few select men on the planet who could genuinely claim to have such measurements. Truthfully, most girls aren't lying when they say something of that size would be far too big. It was easy enough for Jacob to get into a girl's pants, but afterwards he and his partner both would feel some disappointment and frustration over the inability to get more than the first couple inches inside, making the most of what little penetration they could achieve.

Now, however, Josh had unwittingly created a sex demigod, in the person of his own older brother. Josh did not seem to realize--or if he did, he simply did not care--that his new rule affected men relative to where they existed on the bell curve prior to the aberration. Thus Jacob was now in possession of the most formidable monstercock imaginable, which reached the upper limit of a full 25 inches when fully hard. What's more, Josh's new changes made it so that Jacob could put his weapon of mass destruction to much more use than he ever did in his old life. What was more, the new rule that female bodies would always be able to adapt to accommodate any size, combined with his wholly unmanageable size, meant that Jacob's cock was capable of crashing through women's cervices, directly into their waiting wombs.

So as Jacob strolled into his family's living room, he took notice of the app open on his younger brother's phone. He typically wasn't the prying type, but curiosity overcame him regardless. Picking up the phone, Jacob laughed incredulously at what he saw. "You've gotta be shitting me! I didn't know he was into fantasy stuff." However, what gave the older sibling pause was that the measurements and rules that Josh had inputted didn't seem to be fantasy, but they were already the norm for their world.

Considering their parents were out of town on some business trip (a convenience that seemed to Jacob almost like something contrived for a porno plot), some messing around seemed in order. In order to test out if this absurd device actually had any effect, he inputted a test.

All men named Jacob have blond hair.

He pressed ENTER and waited. He didn't feel any magic overtaking his body, so he was just about to assume it was some silly bs when he looked at his own phone to spot his reflection. "I'll be damned..." the newly blond man gasped. His brother had absolute power in his hands, and he had been enough of a dunce to not have it on complete lockdown. Well now he had absolute power in his hands, and absolute power corrupts absolutely. "No harm in using this for a few more changes for my own gain. It won't hurt him anyhow."

All women are sizequeens; the bigger the man's cock, the more pleasure they feel from sex.

Women are drawn unashamedly to 'alphas,' those men with the biggest cocks. These alphas also secrete pheromones to alert nearby women of their virility.

Just as Jacob had finished typing up his depraved new ideas, the house's doorbell rang.