Genital Switch Day
From that day on, everyone has to live with new genitals.
Chapter 1
by 
HMG
Inspired by the works of darkness_drearing and Thechanger12 (seriously great people, check their works, please), I decided to create a new universe where every new contributor can add new characters and new adventures.
About the Genital Switch Day
On April 1st at 01:00am CEST every person in the world exchanged her/his genitals for the genitals of the opposite sex. In a split second, for some people, life broke down, for others it was an amazing opportunity, and for the rest, they had to get used to the new reality. Certainly, no one will forget this April Fools' joke.
For contributors
1) All people recive genitals of the opposite sex on April 1st at 01:00am CEST:
- the year is not important (you can choose any year you want).
- this means some people in other parts of the world were awake when their genitals were replaced.
2) The exchange was immediate:
- less than a second.
- no one noticed what actually happened.
3) From now on, women produce male sex hormones:
- all women have penis, testicles, male accesory glands (including prostate).
- their still female breast are unable to produce milk (unless they have some hormone disorders or external hormone supply).
4) From now on, men produce female sex hormones:
- all men have vulva, vagina, uterus, fallopian tubes, ovaries.
- they have periods.
- they can get pregnant.
- they can breastfeed (even though they still have typical male tits).
5) If woman was pregnant during the exchange, then she stop being pregnant and instead of her, the father of her unborn child becomes pregnant.
6) For obvious reasons, politics, religions and cultures will experience incredible shock and chaos in the first few days. You can easily base your story on it. ;)