There are already several definitions for this term on here, but all of them are wrong.
I think people must be confusing "hard
fart" with "dense
fart", and those terms are not the same thing.
A "hard
fart" or "hard gas" is a medical term, something you might tell your doctor or your doctor may ask you about. A hard
fart is a painful fart that sometimes has to be squeezed out to relieve pressure in the bowels as a result of constipation. You will discuss this with your doctor as a symptom of constipation. Usually, there is no defecation associated with a hard
fart because of an underlying constipation issue. Sometimes a small amount of solid particles or "fecal debris" may pass along with this
fart leaving skid marks, but this is not the same as a "shart".
Conversely, a "dense
fart" comes about as a result of a diarrhea issue, usually a precursor to blowing mud. Hard farts are a precursor to having a painful,
dry bowel movement sometime (often days) later.
Doctor: "How often do you have bowel movements?"
Patient: "About every 4-5 days, but I have a lot of
hard farts for a few days prior to having a
BM."
