by momo meant the "momo challenge" so earlier my sister was watching like this Peppa pig video the all of a sudden I hear my sister scream in terror then I yelled out whats wrong chiona. chiona means crybaby in Spanish ok so then I hear her say momo so I run in the room and I see this Siri type voice say "know little child if you don't follow these rules you will die tonight"then I turned back into the Peppa pig video again it was really out of the ordinary.know if you have a little sibling that watches YOUTUBE KIDS tell them to not watch it any more now this thing does not happen on tv I don't think but still people actually listen to this shit know be careful!!!