The Queen waved her hands and both the farmer and the wife found themselves naked. Both shuddered, before beginning to change.
The wife groans as her figure begins to expand. Mostly her chest. Her breasts begin to swell, growing larger and larger and larger. Soon they are larger than her head, and still growing larger. Simultaneously, her hip expanded, making her a much more womanly figure. Suddenly she lurched, before falling forward onto the hard stone floor on her hands and knees, her breasts growing until they each are massive. Her nipples are brushing the stone floor, a dark brown color permeating both them and her areola. She moans, as milk droplets begin to pop off, a steady trickle from her massive milkbags collecting on the ground.
The farmer himself groans as he suddenly gains a lot of muscle, growing slightly taller as well. His entire body becomes well toned, and his dick grows a lot longer and thicker, at least 9-10 inches.
"Now, you will be the cow, and you will be the bull." Said the queen. Around the kingdom, every man and woman is undergoing similar changes, every woman suddenly restricted to crawling on all fours and making milk, every man suddenly equipped with a massive tool for pleasure and reproduction.