A stereotypical social media commentator, usually with a beard, who likes to hear themselves speak as if they are an expert on a given subject, but their expertise might be questionable.
The bearded know-it-all gave me an unsolicited lesson on what he thought was the proper way to drink bourbon.
The bearded know-it-all mentioned on his podcast that birds are direct descendants of dinosaurs.
The bearded know-it-all argued that there is no difference between micro and macroeconomics.
The bearded know-it-all mentioned on his podcast that birds are direct descendants of dinosaurs.
The bearded know-it-all argued that there is no difference between micro and macroeconomics.
by Rev Possum Jenkins July 16, 2025

by anonymous July 24, 2023

Someone who thinks they’re the king of the mighty hill and acts like they’re in the right all the time, when 90% of the time a quick Google search will prove them wrong.
by Naterdave July 3, 2020

A know it all is someone who thinks they know everything, and refuses to take anyone else's opinion into consideration because, naturally, they know it all. Also known as a Brian.
I have green eyes but my boyfriend Brian insists that I have hazel eyes. Clearly he is a know it all.
by Arniverna September 9, 2022

Governor So-Know-It-All was a general contractor in NH.
by Coop Dupe December 1, 2022
