The meaning of the word "Cranio-rectal impaction"
Commonly misdiagnosed among the general population, a patient with cranio-rectal impaction will present with gross ignorance of current events or sociopolitical issues yet remain very outspoken. Unlike someone who is simply misinformed, people with CAI will claim to be experts in all fields of knowledge and refuse to acknowledge any information contrary to their own point of view (from inside the rectum). CAI patients are often combative, obstinate and generally annoying to be around.
Standard treatment for CAI is difficult due to poor patient compliance. Symptomatic treatments via well-supported, cogent, arguments are usually useless, especially in cases of severe impaction. Family and friends of CAI patients are encouraged to take a hands-off approach and simply ignore the symptoms. Anecdotal evidence has suggested that unsuccessful attempts at treatment may exacerbate the symptoms, causing the patient’s head to be firmly impacted within the rectum.
Ultracrepidarianism is the habit of giving opinions and advice on matters outside of one's knowledge.
The Latin phrase "Sutor, ne ultra crepidam", as set down by Pliny and later altered by other Latin writers to "Ne ultra crepidam judicaret", can be taken to mean that a shoemaker ought not to judge beyond his own soles.
But as a wise apologist with good manners as you are, be careful how you apply your newly gained knowledge and extended vocabulary:
Whoever belittles his neighbour lacks sense, But a man of understanding remains silent.-Proverbs 11:12