"So where are you from, anyway? I know it's, like, Eastern Africa but I don't know what country."
"Where are we from, child. Your ancestors are my people."
"Oh, well, yeah, 'course. But I'm from the East End."
"You are from London as much as this El-Ay. Your ancestral home is beautiful, rolling hills where gnu and zebra graze and the people run their goats; pasture keeps and bustling towns, and in the middle, three rivers meet at a massive waterfall, hidden deep in a valley where none but those with the blood of the land in their veins can find it. That is where our snakes live, in the pools beneath the waterfall. That is where you, and all my children come from. Even if you don't remember, the land remembers you."
"That sounds really lovely. I'd like to visit one day. What county is it in, though?"
"It has held many different names over the millennia, but the humans who live there now call it Wakanda."