Yourself (Male)

You decide to put in your own name, and sure enough there you were. You decide to start with your stamina making sure that, no matter what, you'd never get tired. You turn your sperm production up to the point that you'd never run out of cum. Then you decide to change your ball size making them the size of golf balls. Then you move on to your cock thinking about it. You decide to give yourself some more inches making it a foot in length. You then see you can change the shape. So for shits a giggles you give your dick the head of a horse and at the base a knot like a dog. You chuckle to yourself and hit save.

The moment you did you felt strange. Like something was happening to you. Then your cock began to get hard. It felt a little painful to you get your clothes off and see that your cock was growing as the head changed and the base of it did as well along with your balls. Once it was over you were still hard looking at your monster of a cock. Thinking this could be real you decide to reach out and touch it. The moment you did a wave a pleasure shot through you as it was still a little sensitive.

(A bit of an update. I've changed the story to be public so now anyone can add to the story at any point without me having to look at it first, but I'd still like the guide to be followed)