Not seen one of these threads in a very long time, it's especially important to remember what you've seen nowadays, as the internet is now more scrubbed and sanitized then it's ever been.

This thread is about things you've seen online once or twice and you could never find it again no matter how hard you tried to look. Anything is welcome as long as it's paranormal/spooky. Other forms of media like VHS, books, vidya also count as long as it's interesting enough.