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 Daenerysâ 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 wonât probably matter in the long run.
Person1: I love Jonerys! They are the song of Ice and Fire!
Person2: But theyâre related!
Person1: Theyâre Targaryens so it doesnât matter. They are going to marry and have a baby. Targaryen restoration is coming!