Years ago, in ages past, I spent a fair amount of time in Gmod (before there was a 9 to be Gmod 9). There, I ended up downloading a model pack from one of my favorite games at the time, namely Dark Messiah of Might and Magic (colloquially known as "The Adventures of Sir Kicksalot Deathboot in the Land of Conveniently-Placed Spike Traps"), and started going to town. I was mucking around with the goblin model, having always had a certain affection for goblinoids, when I began messing with the facial expression sliders.
Whereupon I found that with just a couple sliders, you could twist the goblin's face into this ridiculous expression of psychotic delight that somehow just instantly struck a chord with me. I immediately changed my moniker in most games to CrazyGoblin (having previously used a variety of names, including such classics as Sir Pippin the Slightly Daft), and that became my online persona for a number of years.
Then I ended up making friends while playing the HL2 mod Zombie Master (RIP, you were a glorious and utterly janky masterpiece), including one particular weirdo who insisted that I try out Dwarf Fortress.
So after some coaxing, I gave it a shot (this was the last 2D version, I believe), enjoyed it, and let myself get talked into joining the forums here. I decided I should probably spruce up my name a bit for the occasion, especially seeing as I wasn't expecting to stay here long, and tried translating my usual name into Dwarvish.
However, at the time, none of the ingame languages had words for each other... So there was no "Goblin" to go along with the Crazy. I decided to compromise, and instead made my name be just the word "Crazy", but translated into Goblintongue. That word is Kagus.
...and then like a couple years later or so I discovered that it's also the plural term for a particular Japanese heron, so there's that. Also this forum is the one singular forum that I have actually remained active in, for well over a decade now, so I guess my temporary stay ended up being a bit longer than expected.