Remember when your English teacher dropped the bombshell that Romeo and Juliet were technically children, with Juliet estimated to be approximately aged 13, while Romeo was pushing on 16, and you were totally freaked out?
The kids fell in love, got married, then killed themselves around about the same age we were cracking open our first bottle of Barcardi Breezer.
Anyway, prepare to feel that shock all over again because we've just learned how young Game of Thrones' Jon Snow And Daenerys Targaryen are meant to be.
As we now all know, Daenerys is Jon Snow's aunt (Ned Stark's sister, ran away with Rhaegar Targaryen, Dany's much older brother and, to cut a long story short, Jon was born) so we kind of suspected the Dragon Queen and her nephew might be around the same age.
But, given their wrinkle-free skin, we thought they pushing on late 30s - at the very most.
Now, according to Game of Thrones Wiki fan page, Jon was born in 281 AL (AL = Aegon's Landing) and Dany was born in 282 AL, so there's actually just one year in age between the pair.
Season 7 of the hit show is currently set in the year 304 AL, which makes Snow approximately 23-years-old and Dany aged 22, give or take a few months.
I'm sorry, but what now?
These ragamuffins are strolling around beyond the wall, riding dragons and fighting to take over Westeros and they're the same age as we were when we finally moved out of our parents' house and learned that council tax was very much a Thing.
Sadly, we haven't acquired a dragon as yet but there's still time, right?