know-nothing 

one who hasn't a clue about anything whatsoever

Edgars: We don't have a pro-shop, sir.

Captain Murphy: Who knows better, me or a know-nothing like you who knows nothing?!

know-nothing by Michael Belong May 12, 2009

know nothing 

Refers to people who know little beyond their job and the small town that they love in.

The know nothing has little to know knowledge about how people outside of their nothing community is. Some know nothings leave their nothing communities and then go back because they know nothing about functioning beyond their know nothing communities.

know nothing by PineappleJuice March 14, 2015

know nothing know it all 

A person who knows nothing about most topics they chime in on in conversation. This person will be 16 years old with zero experience about farming and tell a farmer about crop rotation. This person will tell a European car technician what's wrong with their car, refuse to pay diagnosis, because they used to work at Chevy in the 80s, and then bitches when the car isn't fixed.

Rather than listening and increasing their knowledge they insist to run their mouth to the point where everybody is annoyed.

Tim actually gave advice to Matt Damon about how to play Jason Bourne better? What a fucking know nothing know it all.

know nothing know it all by Maiorani January 1, 2017

Know-Nothing Conservative 

An American conservative who bases his or her political stance almost entirely on party-generated talking points, and becomes angry, insulting, or panicked when presented with verifiable fact.

Know-Nothing Conservatives: followers/fans of Sarah Palin, Ann Coulter, Glenn Beck

Know-Nothing Conservative by Silvanne January 11, 2011

You don’t know nothing bout this 

A phrase used by older people when a younger person shows admiration for something from said old persons era. Commonly used in jest

Grandson: *puts on ray Charles*
Grandmother: oh baby You don’t know nothing bout this!

You don’t know nothing bout this by Therealrealrealll September 29, 2018

you know nothing john snow

this phrase was derived from tv serial game of thrones , addressed to john snow by two female characters of the serial in a state in which john acted reasonably.
A person who misses a bang bang opportunity acting like a wise ass.
A smart ass treating like a guy from 70's

having refused my girlfriend's tempting request for spending the night in bed with her, she just said you know nothing john snow.

you know nothing john snow by yousef cool April 16, 2015

My thoughts on the experience I must acknowledge that early in life I know nothing 

My thoughts on the experience I must acknowledge that early in life I know nothing

My thoughts on the experience I must acknowledge that early in life I know nothing

My thoughts on the experience I must acknowledge that early in life I know nothing by Bdgt October 8, 2021