No, I'm not talking about words like "LOL", and "pwned", and suchlike, although they have their place.
Think back to five years ago. Back then, (in what we shall henceforth refer to as "The Dark Ages") you could not frame a simple, elegant sentence such as "The meeting was going so well until it got osgiliated." No, back then you had to use such convoluted syntax as "The meeting was going so well until it was sidetracked onto a completely irrelevant topic that was so not totally on the agenda".
Aren't you glad those days are gone for good?

Which brings us to Aagragaah.
What is Aagragaah, you ask? Well, let's let Terry Pratchett explain it to you:
So, aagragaah is a troll word for "forebodings". (not that there are any trolls on the internet, oh goodness no, the very idea!)
Terry Pratchett, in Jingo wrote: And now some damn rock had risen up out of the sea and everyone was acting as if Klatch had let its dog bark all night.
"Aagragaah," said Detritus, mournfully.
"Don't mind me, just don't spit it on my boot," said Vimes.
"It mean - " Detritus waved a huge hand, "like... dem things, what only comes in..." he paused and looked at his fingers, while his lips moved "... fours. Aagragaah. It mean lit'rally der time when you see dem little pebbles and you jus' know dere's gonna be a great big landslide on toppa you and it already too late to run. Dat moment, dat's aagragaah."
Vime's own lips moved. "Forebodings?"
"Dat's der bunny."
"Where does the word come from?"
Detritus shrugged. "Maybe it named after der soun' you make just as a t'ousand ton of rock hit you."
They say that if you practice something for a month it becomes a habit. So, hippo facto, if you use a word every day for a month, it becomes part of your vocabulary permanently!
So, now is the chance to expand your already-impressive vocabulary! Use "aagragaah" whenever you can, not only in this thread, but every time you see the chance in all the other threads! Let aagragaah permeate this board! Here are some examples for practice:
"You know, I already had a sense of aagragaah that this conversation was going to be osgiliated."
"I'm sorry you're feeling such aagragaah at the moment. Here's a

"As the Demon Lord of Zxqwy and Queen Bison fixed each other with their ovals of opticulence, the aagragaah was so thick that you could cut it with a jeweled scimitar."
The possibilities are endless! Add one more word to your vocabulary and improve yourself! Have at it!