“Youtube will begin showing 4 videos at once”

The average YouTube short:

Edit: It’s called “Sludge content”: https://en.wikipedia.org/wiki/Sludge_content

Which reminds me of a certain part from Back to the future too. I’ll try to search for it, but my DVD drive is currently occupied

Edit 2:

Part 2 at 30:27 (at least on PAL edition)