Momo's story starts in 2016, when Japanese artist Keisuke Aiso, head of Link Factory special effects company, created a sculpture he called Mother Bird and exhibited it at Vanilla Gallery in Tokyo.

The meme lifespan goes something like this: an obscure post somewhere on the corner of the internet, a savvy user on a different platform yanking the image and reposting, the right account ...

Momo is back. The allegedly killer meme, which first emerged last year, has returned, worrying parents and teachers alike. Like many an internet phenomenon, Momo was born on Reddit – specifically, on ...