Ultacreidarian

Ooo, another word about people who complain on the Internet . . .

ultracrepidarian

adjective [uhl-truh-krep-i-dair-ee-uh n]

1. noting or pertaining to a person who criticizes, judges, or gives advice outside the area of his or her expertise: The play provides a classic, simplistic portrayal of an ultracrepidarian mother-in-law.

noun 1. an ultracrepidarian person.