Mine was totally not a creative one.
I was somewhat obsessed with a certain kind of standard test that my child would have to take at that time so I picked up that name.
It has nothing to with a pet. If anything, it shows I was a little bit too late to get out of my “helicoptering” role. It surely gets onto my child’s nerve (due to my unwelcomed helicoptering) from time to time.
I’m a father of 4 high school drop-outs.
Now that the OP has given it up, I’ll do so as well:
Mine sounds like we used to be nerds and are not anymore, but it was actually just a random screen name assigned to me by my hospital for computer access when I first became employed as a nurse.
Mine is too obvious. Had I known how much time I was going to spend on here, I would have picked something a little more subtle.
@nrdsb4 I have never read your name as “nerds before” but now I can’t read it as anything else.
From the last thread: “Part of my heritage is Romani Gypsy and my grandpa used to call me “gyspy eyes” … therefore RomaniGypsyEyes”
I’ve had it since I was in high school and do wish I had just used Romani. I don’t use this name for anything anymore- my more common s/n is a character from my favorite book series combined with the name of the series.
Mine’s the name of an old song, usually played on the violin.
Lol, that’s okay. I was in the marching band in high school, so maybe it was fitting. 
There is angrydad but I have not seen angrymom yet. Maybe she will pop up to say hello.
I, too, wish I had been more creative. Mine’s easy to figure out. Two kids - one boy and one girl. You can guess their names 
If I could change my username, it’d be “TurnDownFor___”. Parents probably won’t understand. B-)
Mine’s really hard to figure out… Not. Kids that graduated HS in 12 and 14. But I think there’s another mom who used the years kids or kids would graduate college. I have noticed that there aren’t that many of us with numbers before letters.
At the time I joined I was concerned about college for my mathy kid - though more accurately he was my comp sci kid. After he graduated and kid number two was looking and was not at all a math kid I regretted I hadn’t chosen something that described me, not my kid. Mind you, math was one of my favorite subjects in school, but I never went beyond calculus.
Penn Stater that likes to knit.
I’m such a NON math person that I don’t even know what even goes beyond calculus!
part of the name of the street we lived on three moves ago
Thanks for reminding me that I’ve been on CC for 10 years. ( I’m on the 09 thread --#33-- but the 05 thread was a few months before I got on. I wonder what happened to some of those old familiar posters?)
First 3 letters of my old company. I hate it, didn’t realize how it sounded.
Nickname.
The role my daughter was currently playing in a local kids theater group
I have the fortune (or misfortune, depending on the day and time:) of being the parent of a music student.