a knight of the seven kingdoms
Definition
The title of a 2015 fantasy novella collection by George R.R. Martin, compiling three 'Tales of Dunk and Egg' stories—The Hedge Knight, The Sworn Sword, and The Mystery Knight—set in the A Song of Ice and Fire universe, 90 years before Game of Thrones.
A pop culture reference to Ser Duncan the Tall ('Dunk'), a humble hedge knight who embarks on chivalric adventures across the Seven Kingdoms of Westeros alongside his squire, Egg (future King Aegon V Targaryen).
Examples
After one too many mead shots at the con, he swaggered in dressed as a knight of the seven kingdoms, complete with a foam sword and zero dragons.
In the boardroom battle, she emerged as a knight of the seven kingdoms, slaying the competition with pie charts sharper than Valyrian steel.
My Uber driver blasted the soundtrack and declared himself a knight of the seven kingdoms while dodging potholes like they were White Walker hordes.
He tried to fix the Wi-Fi router and failed spectacularly, dubbing himself 'a knight of the seven kingdoms' in the realm of tech support disasters.