plompy · adjective1
Pronunciation spelling of plumpy (“plump; chubby, fat”), likely by analogy with chonky (“adorably fat”).
plompy · noun2
Uncertain. Possibly inspired by floppa (“caracal”), and associated with DoggoLingo. The name was popularised by, and perhaps originated in, a meme video posted around February 2021 consisting of four panels, one of which shows a person holding and rotating a bat-eared fox beside a static image of American actor and professional wrestler John Cena with a speech bubble stating "Rotate the plompy".
Etymology from Wiktionary, CC BY-SA 4.0.