The mutations on the Futanari sex

"That's an excellent theme class! Well, as you know, the futa-gene is extremely volatile. In certain futas, it can cause massive mutations in their bodies. Sometimes, these mutations can affect the growth hormones, making them reach massive sizes. Take a look at page 51 of your book..."

On that page, there was a black and white photo of a nude futa, standing side by side with a man that barely was able to pass her knee. Her cock, which was soft, was bigger than the men, reaching almost 10 feet tall!

"This woman is Dorothy Xiu, she is the biggest futa ever recorded! She was so massive that the government allowed her to use ****-condemned criminals as sex toys, so she could relieve herself. The bodies of her partners just weren't able to resist her size, and they normally burst after being only used once, like a cheap condom!"

A lot of futas in the class laugh at the teacher's morbid statement.

"Even though she is massive, there are ancient tales about even bigger futas, some of them said that they were even able to swallow people alive, both with their mouths and with their cocks!" The entire class gasped, making Mrs. Miller grin, "Yes. The people would be, theoretically, send down the depths of their cocks, and be digested by their semen, turning into cum! How interesting, right?!"

"Now, another mutation that is pretty famous is the horse-cock mutation. Most of you know about this, yes? We have a teacher that presents this mutation, Mrs. Morita Ritsuko. Instead of a human-shaped penis, her cock resamples the one of a horse! Not only in shape, but also in sexual potency! Some say that people with this condition have the same sex drive as a horse!"

A lot of students nodded, some of them had already felt first handed how true this statement was...

Mrs. Miller spends the next minutes explaining the other mutations, like the addicting-cum, the super-sized genitals, and others.