This guy overstepped his boundaries with mistress Gaia and he thought that it was not a big deal. It was to her and she had to show him just how much it was. And she used her shit to do it so that he would remember it for a long time to come. As he ate the shit, he asked himself why he had to overstep his boundaries as he was paying the price.
Mistress Gaia had to put this guy in his place as he did not seem to know what his place was. She had tried to talk to him but it did not seem to help. So she had to find an alternative way to get her message heard and for action to be taken. And so she settled on shitting on the guy and it actually worked as it was intended.