From publisher blurb:
Sometimes, you’re in the middle of a game, and your group find themselves in a shitty situation…literally. As was the case last week when a D&D group I run found themselves heading down what appeared to be a sewer entrance. This naturally led to some side conversation, and what topic should arise? The Golgothan Shit Demon, also known as an excremental, from the movie Dogma. Well, of course that was too good to pass up, so below are the D&D 5e stats for this poo-flinging fiend.
In the movie, the creature is said to be a demon created by the body waste left upon a field where many people had been crucified. The 5e write up has a sidebar, which offers some other origin options as well, both as an undead creature, or even as a foul elemental.