Herdmind in action

Herd Mind
is the name given to the event of 2 or more users posting the same image or saying the same thing at the same time as if all of the users shares the same consioucsness like a swarm of zergs or tyranids. This is not to be confused with an Image Derp for images, when one image overrides the other.

It is an alteration on the term "Hive mind," and has also been misspelled and used as "Herve Mind," to some confusion.