The doctor has come over and puts a reassuring hand on your shoulder. He follows your gaze, and explains, "Humans have some of the larger genital organs among apes. Proportionally, only chimps are larger compared to their body size. Anthropologists hypothesize that it has to do with sexual stimulus and mating patterns. Bigger dicks in humans, red butts in baboons. Orangs and gorilla tend to mate for life, chimps live in harems, and humans are somewhat in between, hence the testicle sizing."
The guy is talking like a narrator on the Discovery Channel, fuck can't he see that you're becoming a gorilla. Doesn't he care!
You try to speak. Only grunts come out.
Seeing your consternation, the white coated man reaches into his pocket, "Wanna banana, big fella? This should calm you down."
The smell is ambrosial. You sniff and look at the banana and the doctor. Part of your brain says he is good man, a growingly more distant part of your brain screams that he is making a monkey out of you. Somewhere a voice in your brain corrects, ape not monkey; gorillas are apes.
You bite the banana, skin and all. You chew, it tastes great. You feel a sense of contentment. When you again look at the mirrored ceiling you see that all trace of your humanity is gone. You are totally a gorilla.