A user with solid reputation on this site (over 1500 rep) tagged a question of mine with the "goldfish" tag. What does that mean? The question obviously has no connection to a real goldfish, but I don't get the deeper meaning behind this tag. Anyone able to share light on this?
From this list of Magic:The Gathering jargon:
Goldfish - Playing a deck against no opposition to see how it draws and how quickly it can win, given no resistance. At one point, this also referred to playing a deck against an imaginary opponent who simply cast a 2/2 for two every turn, though that usage has fallen out of favor.
I've added this description to the goldfish tag wiki. I don't have an opinion on the tag one way or another.