I didn't realize the source, but when you posted I was pretty sure I'd seen it elsewhere:

https://news.ycombinator.com/threads?id=dQw4w9WgXcQ

You guys are awful, you know that? Discussing this URL without spoilers... it's because of people like you that that thing has so many views!

:P

I recognized it immediately when I was watching the video :^)

When it showed up I sort of guessed, but had to try clicking it anyway, then my wife asked why I was laughing.