Ass-to-mouth
If the recipient of ass-to-mouth is performing fellatio on a penis or object that was removed from their own rectum, the health risks are generally limited to disturbances of the gastrointestinal tract, which may proceed from introducing normal intestinal flora from the rectum to the mouth and upper digestive tract. If the recipient's ano-rectal area is infected with a sexually transmitted disease like gonorrhea, however, there is an added risk of transmitting the infection to that person's mouth or throat.[2][3] Intestinal parasites and other organisms can also be carried in feces. Risk of sexually transmitted infection (STI) or parasitic transmission exists only if fecal particulate from an infected person is transmitted to the mouth of an uninfected person.[4]
ass-to-mouth
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