Not sure where to go from here, but I had this idea so for now here goes:
The teacher was easily nine feet tall, and weighed well over a ton, mostly immense, bulging, rock-hard muscle. Her dress was visibly strained, and seemed about to tear with every move she made, with a few stitches already torn. “Who here can tell me,” she asked, “about the different types of human reproduction?” A short, chubby, bookish girl in the back row raised her hand. “Yes, Bonnie?” “Absorption and mutualism.” “Correct. What are the differences?” “Absorption is when a male impregnates a female, causing her to absorb his bodily mass and develop both increased size and strength and retractable male reproductive organs. From then on, the female can either self-impregnate or release her cock to impregnate another female, which is known as mutualism.” “Correct, as always.” A large, growing bulge appeared just below the massive teacher’s waist. Within seconds it tore through her dress, revealing itself to be a cock with a head bigger than her actual head and over two feet long, with a set of balls that were each even bigger than the end of her cock dangling beneath it. “I absorbed five men to grow to this size,” she boasted. “Now, who can tell me what a husband is? Kylie?” The black girl lowered her hand. “A male who a female lives with, in a similar relationship to marriage to another female . It’s rare, but it happens. Usually, the female purchases a different male to absorb or hires a surrogate female sperm donor if the couple decide to have children.” “Indeed.” The bell rang. “Alright, class. Remember, the essays about absorption in ancient history are due in a week.”