It may amuse you to know that in Britain, we got 'Harold and Kumar get The Munchies', although I feel 'go to White Castle' contains subtle nuances lost in the British version.
Umm, not as much as you might think. White Castle is known as the lowest of the lowend food joints though some people are very partial to its dimunitive oniony greasy burgers.
It's a better title than "get the Munchies" because it's a bit more random and less obvious, but that's about it.