Southpark - Its The Japanese What Is That Japanese Song From Southpark?

What is that Japanese song from Southpark? - southpark - its the japanese

I think it is the result of where they are weapons ninja or something, and if

Hey, hey, lets go, blah, blah stroking his balls and blablablabla little random, like all Japanese, and then "stroking my balls" and all that?

What is this song? Instant 10 points determines who can me a YouTube link.