The term refers to a canon romantic relationship from Game of Thrones season 7 between the protagonists of the series Jon Snow and Daenerys Targaryen. They are related by blood - Jon is Daenerys’ nephew - but neither of them is aware of this yet.

Since they are both Targaryens and since the Targaryens were famous for two things: incest and dragons, the fact that they are related won’t probably matter in the long run.
Person1: I love Jonerys! They are the song of Ice and Fire!

Person2: But they’re related!

Person1: They’re Targaryens so it doesn’t matter. They are going to marry and have a baby. Targaryen restoration is coming!
by Milly_ December 16, 2018
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The hottest and powerful couple in the world
“Jonerys is incest, ew”
“Do you shipp Jonsa?”
“Yes! It’s cute”
“🤡”
by Dracaryscrown April 11, 2020
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