Jack wanted try something worldwide, that way he can find out how different parts of the world react to something happening. One of the things he always fantasized about was men and women switching genitals. He wanted to see mental, social, and psychological changes that come when guys lose their dicks and girls gain them. Would men become more feminine with vaginas? Would women become of the dominant gender? He was getting a boner just thinking of it and he went into some bushes so no one would see him.
He whipped out his dick and started pumping. He wanted to have one more orgasm as a man before he made his wish. As he was pumping he started making it, "I wish that once I reach orgasm, all men and women in the world will have their genitals switched with the opposite sex. Women that are pregnant would have their babies transfer to the men that impregnated them. The changes will last at least one year, at which point I will be able to change the world back at anytime I wish. Everyone in the world will be aware of the change."
He was pumping faster as he finished his wish. Just thinking about how him cumming will change the world, potentially forever. He thought about his dick and balls shrinking into him. He thought of a sexy woman suddenly gaining a bulge in her panties. His hand was hard at work going as fast as possible as he could fill the build up coming and in seconds he would spray his semen for the last time for awhile.
And he then he came.