"caird coinheringaahing" comes from [this](https://codegolf.stackexchange.com/a/118068/66833) Jelly answer. Given that the answer is written in Jelly (my primary language on the site), and the challenge is very much about the site, I thought that it'd be a fun, unique username that references the site.

[And it should be pronounced "cared co-in-hear-ing-aah-ing"](https://chat.stackexchange.com/transcript/240?m=56777627#56777627)

Fun fact, moving the space around in that answer leads to the following possible usernames:

 ChartZ Belatedly
 oppS,aback
 reerects bespangling aachen
 Erasmians cleptaahing
 caird coinheringaahing
 Dude coinheringaahing

I have changed my username (briefly) to both `ChartZ Belatedly` (during March 2021) and `Dude coinheringaahing` (August 2021), and I'm `reerects bespangling aachen` on the [CGCC Gaming](https://discord.gg/J2F8KTHBb4) Discord server.

During June, July and August 2022, my username was "Zion mycelia adamancy", as requested by emanresu A due to [this](https://chat.stackexchange.com/transcript/240?m=61443106#61443106) message in TNB:

> 6 hours ago, by Radvylf Programs
> > Well my Jelly encoder doesn't quite work yet, unless caird changed their name to ​Zion mycelia adamancy! and none of us noticed

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As for my avatar, it is a picture of my adorable puppy, Patch. Over December/January, I put a Santa hat on him.