Spanish babytalk mispronunciation of the phrase "A Dormir" ("Time to sleep") that grew popular in the social media sites like Twitter, Reddit, and Tumblr after the Japanese artist [[moricky]] responded to a fan using the phrase.

On June 6th 2020, [[moricky]] shared a drawing on twitter of a little black kitten tucked on a bed. An hour later the user "Brujita Verde" responded to the drawing with the phrase, prompting the artist to ask what it meant and using the phrase after it was explained to her  A few days later on June 15th, 2020, the artist shared a second drawing of a little bear and a white kitten tucked on a bed alongside the phrase "Two Mimir", mistakenly thinking that the original phrase meant a tiny creature called Mimir.
a mimir (meme)