It is maddening trend, how a few seconds of video is often clipped out of a larger video and inserted, on infinite loop, in another document with no direct reference or explanation.
One of the strangest things I've run across on Reddit is a group of people with a kind of thalassophobia (fear of the sea) that is focused on man-made things under or partially submerged in water. They call it submechanophobia and share pictures of such things to spook each other out on their subreddit (https://www.reddit.com/r/submechanophobia).
http://i1.wp.com/gcaptain.com/wp-content/uploads/2013/06/ku-...
https://www.youtube.com/watch?v=Qx1EDAypi7g