Diarrhea pillows, diarrhoea pillows, poo pillows - the buttocks. Of course
Fecal pipes - intestines, especially large intestine. Is it vulgar? Sh*t pipe for an intestine would be rude.
Brass we pass by the a** - feces
Ufolec - Polish colloquial, offensive, derogarory word for an alien, extraterrestrial. My mentality would say that this word is describing especially aliens flying in saucers/discs or grey ones, with large all-black, almond-shaped eyes, big head and slim other parts of the body (although I do not believe in extraterrestrial life). First three letters obviously come from English abbreviation UFO. -ol, -l is some sort of suffix forming masculine nouns, like additional suffix -ec. Word "ufolec" looks similar to the word "stolec", which means "stool" (feces, excrement).
Hypoalienous, alienous, alienic, peralienic (Polish: podkosmitawy, kosmitawy, kosmitowy, nadkosmitowy) - chemical neologisms for fictional compunds of an alien or alienium, I might imagine that it is the element from which extraterrestrial lifeforms are built (especially intelligent ones), words are analogous to words: hypochlorous, chlorous, chloric, perchloric (Polish: podchlorawy, chlorawy, chlorowy, nadchlorowy) used to describe compounds of chlorine with different oxidation levels (from the lowest to the highest).