The cast is now on a promotional tour for Season 8 and Kit appeared on The Tonight Show Starring Jimmy Fallon to talk about the final season which will mark an end to the iconic show.
Jimmy then showed a fiery scene of "destruction" and asked if it means everyone on the show dies and Kit replied with another wink-blink answer.
The two also discussed this week's terrific SNL promo - Harington hosts this Saturday, April 6 - and whether Harington likes or hates endless references to the famous Thrones line "You know nothing, Jon Snow".
Does a sword in the snow mean that Jon Snow has died?
"I hate it when people say it, and my brother managed to get it into the end of my best man speech", he said.
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Harington didn't wear his actual costume from the show, either. Kit admitted that at his wife and former Game of Thrones actress Rose Leslie's 30th birthday bash, he dressed up as his character Jon Snow because the theme of the costume party was "Bad Taste". Keeping that in mind, Fallon challenged Harington to settle some Game of Thrones spoiler questions with a wink meaning yes and a blink meaning no.
In all seriousness, I could watch Leslie Jones watch Game of Thrones all day every day.
During the interview segment, Jimmy tried to decode some Game of Thrones rumours surrounding our very own Jon Snow.
Harington's response? I think you can guess - although this one seemed markedly more wink-like, but that could just be me. The problem? His winks and blinks look the same. Ditto. Will Jon get to ride a dragon?
The first episode of the eighth season of Game of Thrones lands on HBO on Sunday 14 April for viewers in the United States, while the UK can get their fix in the early hours of Monday 15 April.