Yeah the momo thing is very scary. After posting this I checked James' Ipad..obviously he cannot search for stuff himself yet so we do it which gives more control, but it appears 12 year old stepson might have been searching on there, as there was a search for ****ing 'slenderman'. Thats a blast from the past and am not happy at all. I always keep an ear out for what they are watching, and when the video changes I check what it is as the autoplay thing is a bit dodgy too sometimes. So no idea how this has happened
I would hope a search for slenderman showed nothing on youtube kids though, he doesn't have normal youtube.