I feel like this isn't talked about much but it needs to be. If you do not know what Nightcore is then you are lucky. Nightcore is a community of weaboos that like songs. Pretty tame rig- NO! It isn't! I looked up my favorite song earlier today (F.U.N ~ SpongeBob) and I listened to it. Pretty normal rig- WRONG! I scrolled down to see what was recommended and the video above was recommended. Basically Nightcore is just a bunch of people that speed up or slow down popular songs and put an anime picture in it for the whole video and get views (Some of the videos have 11m views!!) tl:dr: Never look up Nightcore on accident without getting it recommended to you.