"Pesco/pollo vegetarianism", "pescetarianism" or "semi-vegetarianism" Or in other words a vegetarian who is a dumbass and thinks Fish are plants. In some cases they believe that Fish is a type of Poultry and that apparently Poultry isn't meat, possibly giant signled celled organisms. Types of poultry chicken duck goose strich turkey... Funny no fish.
The pescetarian sat down at a table after giving a long lecture about how people shouldn't eat meat, he'd then go on to eat a fish dinner. Thus the ignorance of pescetarianism.