The devil's shit
A bowel movement that looks like an upside down cross when observed between your legs as you sit on the toilet.
Christina and I had tex-mex last night, she told me this morning she took the devil's shit.
Shit Devil
When you have a terrible case of the PPCs (poo poo cramps), and you know that a painful shit will soon be born.
Chad Baconmaker ate Taco Bell for lunch. He'll give birth to a shit devil later.