If you hear anyone ask you or another person to play a game called the "Momo Challenge", intervene or instantly reject it.
The "Momo Challenge" is an alleged form of cyberbullying that spreads through social media and cell phones. After phone users are enticed to contact a user named "Momo", they receive graphic threats from the user and are instructed to perform a series of dangerous tasks. Despite claims that the phenomenon was reaching worldwide proportions in July of 2018, the number of actual complaints is relatively small, and no police force has confirmed that anyone was actually harmed. (Source: Wikipedia)
Please, please, please, please stay away from this game. It condones suicidal actions. If you or somebody else becomes attached to this challenge, go to or get them to a doctor/Samaritan immediately. This challenge has even reached "YouTube Kids" which is an application version of YouTube designed specifically for kids.
If you come across this game, delete all traces of it, do not call "Mamo", and do not gain access to it again.