Momo challenges you to stop spreading fake memes and urban legends
The "Momo Challenge" legend is now big and diverse enough that it's hard to say anything definitive (other than the fact that it's a fake). But, in general, supposedly posts or accounts associated with the Momo image would recommend to children that they self-harm, hide for long periods of time, or even commit suicide. There is little or no evidence of this actually happening. Here is a report from Snopes, and one from Naked Security.
which is actually a "mother bird" sculpture from a Japanese company.
Other posts: https://community.isc2.org/t5/forums/recentpostspage/user-id/1324864413
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