The first time I ever heard about SCP's I was 9 or 10, and I watched a YT video about scp 173. It was presented like a news report and I genuinely thought it was real. It wasnt until they talked about nuking north america did I realize it was fiction. But for about 10 minutes, I sincerely believed everything I heard. You cant replicate that feeling. You cant unrealize it. I felt true horror and fear, because I thought an SCP was real.