#23: I Speak L33t
Even if you’ve never heard the term l33tspeak before, you know what it is. Google examples, and you will see words like “n00b,” “Deadmau5,” and “p0wn.” Yup, you know l33t without even realizing it. It’s basically the substitution of letters with numbers, and it was widespread among hackers and gamers for decades.

L33tspeak is actually a pretty comprehensive language that can be very detailed. Some gamers and computer fans have noticed that this speaking style has slowly faded from the internet as a whole. There’s no telling what led to its decline in popularity. We do know that we miss calling other people “n00bs” without them thinking we’re totally outdated.