ant mill

An ant mill is an observed phenomenon in which a group of army ants are separated from the main foraging party, lose the pheromone track and begin to follow one another, forming a continuously rotating circle, also commonly known as a “death mill” since the ants might eventually die of exhaustion.

“I used to see ant mills all the time when I lived in Paraguay”.

Ant Milling

Two people following each other, each thinking the other has a destination in mind

"Hey Jim where are we going?"
"What do you mean, I was following you?"
"Well I was following you!"
"Aw shit we're Ant Milling!"