Growing up, I remember watching videos like this in Japanese and wondering what context could possibly explain them. Having seen this video and plenty of Map Men videos, I now know the answer: nothing.
from 0:20 onwards at 0.25 speed it sounds like some kids with really strong accents and dont get me started about the scream at "the pbillipenes claim"
This is really not a very good vid... the beginning points out you could do this with any Map men vid and get the same result. As soon as their intro is over, it's just chipmunks. You don't even hear them say "China" or "sea" making the rule pointless...