It was a shock reaction image that became popular on r/cth and kind of became a mascot for the sub & then later for chapo.chat/hexbear.

Honestly, we all got so used to it that it became a nothingburger internally, just a way to tell someone to eff off. I was surprised to see it actually affecting people post-federation, but that’s also attributable to the emoji bug.

CW: Article on the source of Pig Poop Balls