Well, heck! Wouldn't that be hilarious if it was the episode after all?
But I swear it was a fic because I see words in my head when I remember instead of the episode images...gah! In fact, I had to go re-watch parts of the episode to check, lol!
Further details: Another folc said she thought she re-read it recently, too... and that she was reading mainly Kerth winners/nominees. And I'm pretty sure it was part of my re-reading stuff... which means it was likely written before 2014 (since that was the last time I was around before I came back again).