Jon Snow 

He knows nothing.

"You know nothing, Jon Snow"

Jon Snow by CarnieTown May 12, 2014

Jon Snow 

Someone who knows nothing.

"You know nothing, Jon Snow"

Jon Snow by Xxxdepy July 24, 2016

Jon Snow 

Jon Snow is a character in game of thrones that is still alive and Matthew Payne won't shut the fuck up about.

You know nothing Jon Snow.

Jon Snow by Bobby Jonnyson October 24, 2018

Jon Snow 

A sexual act. A man's finishing move that always pleases the ladies.

.... So last night, we were going at it.
She was almost there and I gave her the Jon Snow!

Jon Snow by Ronanigans June 23, 2015

Jon Snow Syndrome

That overwhelming certainty of knowing nothing.

'been coding for years, though I still have the feeling that I know nothing about programming. Must be going through Jon Snow Syndrome

Jon Snow Syndrome by juan nieves November 15, 2019

Jon Snow Syndrome

In which a person of small or semi-small stature who regularly wears bulky clothing is seen without said bulky clothing. Though there's nothing proportionally wrong with them, you can't help but think that as they essentially just instantly changed their body type right before your eyes.

Seeing Kit Harrington shirtless was the weirdest thing! I'm so used to seeing him in all those furs on Game of Thrones. But that's Jon Snow Syndrome for you.

Jon Snow Syndrome by Redtale March 8, 2016

Jon Snow Hug 

When you kiss/hug your girlfriend/aunty and commit treason (by stabbing)

Gods, I hope Carl won’t subvert expectations by greeting me with a Jon Snow Hug

Jon Snow Hug by see pounce is azor ahai May 22, 2019