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My guess based on your description would be something good, that after a few uses, goes catastrophically bad. Like a gun that disintegrates the person you shoot (prophet) and each subsequent use after the first (squeeze) gives it a increasing chance to disintegrate itself and the user. (monster)
Vocally theres gonna be cracks as it deepens. It sucks, nothing to be done.
There will be at least one wet dream if not more, Hydrogen peroxide soak, then wash with OxiClean should rock those stains as both are recommended for ‘protein’. Wash cold.
Erections at random times will 100% happen. It’s expected.
Acne will happen, body is a wreck of hormones. Use a new pillowcase nightly, do skincare, should largely be fine. If it gets wild prescription stuff might be needed.
Thats all the big puberty stuff really, short of whether the quarterback or head cheerleader makes his pp into the big pp but thats a whole other discussion.