These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Nightmare Fuel: In the science chapter, the Lithotome. Funny description/possible nightmare fuel in the note: note "An 18th-century tool doctors inserted through the urethra in order to relieve painful kidney stones. To put that in layman's terms, we used to shove pointy sticks in our dickholes on a rock-retrieval exploration dig."