The word Tarzan used to communicate to the animals; Also used by Dave Chappelle in the racial draft episode as a parody for how white people address other races.

When you eat dirt for the first time and leave your family to build a shack in the woods

Like the other guy said, it seems to originate in Tarzan movies but it was co-opted by Black teens in Oakland during the 70s (I'm okay about being corrected here - earlier?) as a slang power-grunt.

I'd love to see someone provide additional words to my example. It's been a LONG time...

A word used by African American's to express black power

Ungawa is a word which, when translated from the language of the Ekyps means, "wait till later this afternoon, son."

a word used when speaking to any individual of Asian descent (particularly in ChinaTown New York). It really doesn't mean anything, except that it gets the attention of Asians, and it often can mean simply "hi" or "hello"

1. proclaim teh awesomness of something.
2. word used to describe sexual reference
3. to turn something harmless into a gay joke.