Quote Originally Posted by MFauli View Post
Praising Fern's choice as "legendary" is just one of those typical weeb nerd gimmick memes that everyone does on Twitter and Youtube and wherever and thinks it's "cute" or something. Nah, it's dumb. She wasted a once-in-a-lifetime opportunity on being too lazy to wash her clothings. That's what remains. :/
Wash your clothes the old way (starch-based slime, naphtha soap, hot water from the stovetop three separate times, borax, bluing, etc.) for two weeks and let me know how you feel.

I know you don't pay attention to the details of a series, but it is also consistent with Frieren and Fern gushing over the pots and pans cleaning spell at the beginning of this long-ass arc. A spell they were both very happy to acquire and one they both considered to be one of the most valued they'd found over the years.

It's not a meme, it's one of the smartest gags the author has done in the series as a whole.