When you’re drunk or High (or both) and you go to White Castle at 2-4 in the morning that is when white castle taste the best and can cure any ailments related to alcohol or drugs.
Spotted in "Girls" by the Beastie Boys on the album "Licensed To Ill"
Essentially is referencing everywhere in the world. From Mid-Western of the US' White Castle Fast Food all the way to the Nile River in Africa.
Ad-Rock: I like the way that they walk
And it's chill to hear them talk
And I can always make them smile
From White Castle to the Nile
Girl: I get looks every time I go out, from White Castle to The Nile!