Oatmeal Effect
When two people talk about the same dumb thing at the same time, like they were brainwashed by the same cursed meme.
'We both started talking about the same stupid movie at the same time, like we were cursed by the same Netflix algorithm.'
'We both brought up the same dumb argument at the same time, like we were possessed by the same annoying ghost.'
'We both brought up the same dumb topic at the same time, and it was like the universe was trying to make us both go insane.'