Meanings
- humorousUsed to imply that someone lacks experience, knowledge, or understanding, especially as a rebuttal of a previous statement.
People in New York are complaining about how hot it is and I’m like you know nothing Jon Snow.
2014, @becafarmer, quoted in Metro (New York), 3 July 2014 - 6 July 2014, page 22 more examples
All your planning is done. Your bag is packed. You've got your pass. You've finished marathoning Orphan Black. It's con time. But if you think you're ready to head inside just because you've done all this planning, you know nothing, Jon Snow. There is a lot to deal with once you're through the front doors.
2015, Sam Maggs, The Fangirl's Guide to the Galaxy: A Handbook for Geek Girls, page 124Charles nodded, understanding. "I know." From up front, Pete said, "You know nothing, Jon Snow."
2023, Jason Powell, No Man's Ghost, unnumbered page
Origin
From a catchphrase said repeatedly by the character Ygritte to Jon Snow in the novel A Storm of Swords (2000) by George R. R. Martin. The phrase, initially used reproachfully and then later affectionately after Jon and Ygritte fall in love, was popularised by its use in the television adaptation Game of Thrones.
Full word history & related roots →Cite this entry
you know nothing, Jon Snow. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/you%20know%20nothing%2C%20Jon%20Snow
“you know nothing, Jon Snow.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/you%20know%20nothing%2C%20Jon%20Snow. Accessed November 5, 2026.
WatkinsX Dictionary, s.v. “you know nothing, Jon Snow,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/you%20know%20nothing%2C%20Jon%20Snow.
Source: you know nothing, Jon Snow on Wiktionary, CC BY-SA 4.0.