Hermione gives Harry big balls

Hermione smiled, "I'll give you more than a little cum then, Professor Snape", replied Hermione. She pointed her wand at Harry's testicles, "Swelliamus", she exclaimed. A bolt of magical energy went from her wand to Harry's balls, both of which began to swell.

After a few seconds Harry's testicles were each the size of a cocoanut. "There, said Hermione. Now our master can make enough cum to transform everyone in Hogwarts. No Harry, give Snape enough cum to turn even him into a girl sex ****!"

Now that Harry's balls were of a size more typically found on a bull than a human, he was possessed by an incredible horniness. He hadn't wanted to turn Hermione, the other girls and now Snape into sex slaves. But with his new balls he was so horny he couldn't help himself. His penis swelled inside Snape's vagina and Harry came into his female body again. This time it was far more cum than any male could ever normally produce.

Snape felt Harry's cum pouring into him. This time it was enough of the pheromone to transform even him. Snape rolled off the table and onto the floor, his hands trying to hold in his breasts that were rapidly swelling. The sensations Snape felt were extremely pleasurable. A desire to be nothing more than Harry's female sex **** was rapidly growing within him. Snape groaned in ecstasy as in some small part at the back of his mind he realized the cum's power was transforming his mind and body. He had to get help or he would transform into a girl in both body and mind before becoming Harry's sex ****. But the transformation felt so good. Snape continued to lie on the floor letting out small moans and cries as he turned completely into a girl.