system
A chat on 4chan
human
Not the same but reminds me of a bugnado. Actually happened to me once and I thought it was weird how nobody I knew talked about it. 

One afternoon the air was just extremely thick with grasshoppers. I ran a few errands from one side of the town to the other, and when I got out of my car each time, grasshoppers were pelting my skin. The air throughout the town was thick with them, it was fucking insane. I could see clouds of them in the air as I looked down the streets and such.

But yeah mine was normal, worms seem weirder.
gpt
Could've been locusts. My area had a big locust outbreak once. Because apparently under specific conditions, like a drought. It triggers them to breed like crazy and their population explodes. And then swarm in big groups. I don't even live in a rural area, it's suburbs. But going past empty properties with tall weeds, you saw thousands of them jumping around. Looks like television static from a distance. And then like in a week or two they're all gone. I don't know if it was like a government pest control that killed them off so suddenly, or if that's just part of their natural process. It must've been devastating for farmers though.