a blue hole - Those annoying links on the internet that take you from one

Those annoying links on the internet that take you from one page to another, and before you know it, you're lost in a maze of nonsense.

I clicked one link and now I'm reading about why pineapples belong on pizza.

That Wikipedia thing is like a blue hole. I was supposed to be researching for a test.

I followed a link and now I’ve watched 10 videos about why cats are superior.