Mister Know It All is the annoying person that has to tell you that he knows the best. Mister know it all feel the urge to correct everyone if he believe he is right (wich is very often).
Tim: oh, look at that white cat, it's so cute!
Jim: what white cat? I can't see any white cats here. Oh, you mean the white cat with some grey dots on it's forehead? Cause that isn't a white cat. That is a semi colored cat....
Tim: can We just warm up some noodles night? I feel like eating something easy, the japanese way.
Jim: uhm, noodles are actually chinese and not japanese, just so you know....
Jim is the annoying Mister Know It All in this friendship.
Jim: what white cat? I can't see any white cats here. Oh, you mean the white cat with some grey dots on it's forehead? Cause that isn't a white cat. That is a semi colored cat....
Tim: can We just warm up some noodles night? I feel like eating something easy, the japanese way.
Jim: uhm, noodles are actually chinese and not japanese, just so you know....
Jim is the annoying Mister Know It All in this friendship.
by norajaegtvik November 22, 2016
Someone who goes around thinking things are big and clever, and believe they know it all about everything, but don’t because their still things he / she don’t know about just yet.
by Urbantheturban July 8, 2019
A lot of people confused the guy with a know it all. He didnt think he had all the answers to everything, but he was sure of which ones were bullshit.
by Solid Mantis June 10, 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 10, 2022
Person typically has one button and it’s their way or nothing else. Don’t disagree with a know it all because if you do your entire day will change. They will quickly flip the script and could even lead to hate crimes, or even worse the “ K bye”
by Reneman April 27, 2018
Someone thinks they know something but are totally wrong. They will argue with you even when proven wrong.
by Cheri Conners RN February 24, 2019