Students have long figured out how to get over a system like this: create their own words and even a pseudo language.
Heck, back in my day *high school* students did this to evade the language police, which was minimal, or just to ensure privacy. The best part is that it annoys the heck out of the enforcers.
Even the entire Cockney language evolved this way, as did Pig Latin.
Back then, we had a great resource about cursing in other languages, in Maledicta, The International Journal of Verbal Aggression, published by Reinhold Aman from 1977 to 2005. When asked about his favorite swear word, he cited a word from northern India. “Sala”.
Sala literally means “your wife’s brother.” However, implied are several paragraphs of really rude verbal aggression included. A just before the fistfight word.
So, of course our standard greeting, while making a one-handed Hindu salute, was “Sala”. But we had a bunch of them, utterly opaque foreign expressions from around the world, that were quite obscene and offensive.
LOL! I knew the Yiddish cuss words back then, also knew some Puerto Ricans in hs who taught us some “colorful” Spanish words. Also some guys from “the Islands, Mon” who showed us the fine art of using salty languge from the Caribbean. Even knew someone who’s deaf who showed us how to curse in sign language. Yeah diversity can be a good thing :)