Brainrot, rizz, NPC: internet slang decoded

If you've ever watched an adult try to use the word "rizz" and biff it completely, you know the power of online slang. These words aren't random: they work as ultra-precise shortcuts. "Rizz" sums up charm, the ease of flirting, in one syllable. "NPC" tags someone who seems to follow a script without thinking, a nod to video games. "Brainrot" is the state of having scrolled too much, brain turned to mush. A single term replaces a whole sentence, and that's exactly what makes them so efficient and so contagious.

A password among insiders

Slang has always had a social function: separating those who get it from those left outside. Using the right word at the right moment proves you keep up, that you're in the loop. It's a quiet but powerful belonging signal. And because these words change fast, they stay a permanent test: knowing last summer's term isn't enough, you need the term of the moment. Many are born in gaming or streaming before spilling everywhere: "NPC," "lag," "speedrun" left the screen to describe real life.

Why it dies just as fast

A word turns cringe the moment it's overused, especially by the wrong people. The day a brand or a teacher tries to drop it, it loses its aura. It's cruel but logical: slang draws its value from rarity and freshness. Too popular, it no longer sets anyone apart. In Luxembourg, where several languages mix, these English terms slip into French, German or Luxembourgish spoken among friends, then vanish when the next one lands. Learning internet vocabulary means accepting it'll be expired soon, and that's the whole game.