Obligatory “not today” disclaimer: actually fucked up over two decades ago, but found out today.
At the dawn of theinternet, I made an account on imgur. I figured (correctly) that I wasn’t going to use it often enough for the username to matter much, so I just went with the first part of my email adress and a number four times.
Turns out that there is such a thing as nazi number code and it’s never a good idea to use an even number of 8s for usernames when you’re not a nazi.
TL;DR: Didn’t know about nazi code, accidentally selected an imgur username ending with the equivalent of a double Hitler salute
Having a regretful username is something I experienced too.
Back in the late 90s, I used the nickname my girlfriend at the time gave me: “loverboy” (We were both 80s music fans, etc)
It turns out that was something very NAMBLA-y
When I discovered the issue, quickly switched it all over to my current username.