https://www.outsideonline.com/1784611/why-does-it-feel-good-poop
“Poo-phoria occurs when your bowel movement stimulates the vagus nerve, which descends from the brainstem to the colon. The vagus nerve plays a role in several bodily functions including digestion, and regulating heart rate and blood pressure.”
“it tends to take a particularly “large mass of stool” to trigger poo-phoria and its vagal-nerve-induced feelings of exhilaration, intense relaxation, and goose bumps. Poo-phoria can be addictive, the authors warn, though they don’t elaborate on how addicts manipulate their poo to make it especially big.”
What, wait what?