What I'd like to know is the status of 'outdated' slang in other languages. I don't know of any old slang in Spanish. I don't know any slang in French, and I've just started Russian. :P
Is there any style of talking or are there any words that, if used in your language, will brand you as an old geezer who's living in the past?
In addition, I love 1337 and chatspeak. What equivalents are there in other languages? I know the french have something like 'mdr' to replace lol (I think it means mort du rire, but I could have murdered the phrase) and I'm pretty certain all the Spanish kids at school have their own chatspeak as well.
Peace out, mah homedawgs. ttyl~