I read that page you linked to above as well and it was quite interesting but a little problematic
I linked to that person's experiment only because the scientific research says that TCH in oil can barely permeate the lining of the lower large intestine, and I was curious as to what their results were. The science is this...
From Practical Pharmaceutics, An International Guideline for the Preparation, Care and Use of Medicinal Products:
"The rectum does not absorb fats efficiently. Any active substance in a suppository must first dissolve into the aqueous mucus that lines the rectum and then pass into the bloodstream; it cannot be absorbed directly by the membrane without traversing the aqueous mucus layer. Therefore active substances that are themselves lipophilic (such as cannabinoids) should not be combined with a fatty or oily carrier, as this will reduce their overall absorption."
From the NIH:
"Oral administration of delta-9-tetrahydrocannabinal (delta 9-THC) was shown to result in low and erratic bioavailability, while the drug showed no bioavailability from various suppository formulations."
It was only after they modified the THC to THC hemisuccinate in a lab did they find:
"The observed rectal bioavailability of delta 9-THC from suppositories containing the hemisuccinate ester as a prodrug is of significant importance in developing an alternative approach to oral administration of the drug."
I'm searching for scientific answers in an environment where science is federally prohibited from going. The NIH studies are almost all at least 15 years old.