In this timeline humanity has evolved slightly differently with about one to two percent of human beings including yourself being cow girls. All cow girls are sexy women with the ears, tail and horns of a cow. Your bodies mature quickly and will stay young and beautiful for decades longer than normal women, with cow girls naturally living pass a hundred. And as cows you all lactate and produce milk for the majority of your lives. The milk is high praised as cow girl milk is seen as the healthiest and most delicious of all milk and as such is sold and enjoyed across the world.
Though there are a few downsides for you cow girls in this world. For starters the average cow girl IQ is only 55 to 70 (though you still retain your original IQ) and cow girls have no human rights and are treated as property.
You now live your life on a farm under the name of Bessie with about a dozen other cow girls. At first it seems like a pleasant if not boring life. At least until you notice a one of the farmers walking towards you as he undoes his belt. Turns out for cow girls to produce the highest quality milk they need to have tons of sex. As such your forced to have sex at least 5 times and are sometimes left strapped to a fucking machine for hours.