A Mutation

The names the doctors threw around were bizarre ones that always went over your head. Testicular Incubitus was a favorite just from the way it sounded but that was just a name, you knew what it meant.

It was a genetic mutation. The gene was found where it was on actually. The joke was that it was that you were like one of those mutants in comic books, you just got powers that were lame as hell everywhere but the bedroom.

They say it starts in your testicles. They hang like normal ones, they're somewhere between jumbo chicken egg size and baseball size. The weirdness first started when the veins in them started turning black. Then it sort of spread all throughout your dick, and the biochemical cocktail it's put in your body is bizarre to say the least.

The overall effect is that you have a foot long erection to which all the accompanying blood vessels appear to be almost jet black in appearance. And where the blood vessels are almost jet black, the cum that comes out IS jet black.

And that's not all. The biochemistry that flood your body is doing other things too- like your body was made to create and process more testosterone. There's a whole list of processes that this could be changing in you, some of them not even figured out yet.

All that you know for sure is that it's a chance you're willing to take. As your legal guardians your parents have made you take a barrage of medications to counter as many of these processes as they can to make you normal- but now that you're 18 they can't make you take them any more. Now, we see what happens.