Coprolalia

Owen RW, Spiegelhalder B, Bartsch H. Generation of reactive oxygen species by the faecal matrix. Gut. 2000 Feb; 46(2): 225-32.

I'm not sure which is more surprising: 1) that our shit conspires to kill us, 2) that there is something called the "fecal matrix," or 3) that there is a scientific journal called "Gut."