I was remembering this today and did a google search. Had no idea where it came from. When I was a little kid, a little white kid mind you, I didn't have alot of friends but the black kids loved my mom who was a Teacher's Assistant at my elementary school so we looked out for each other. This must have been in the very early 70's. They might have thought it was hilarious seeing me marching around the block saying this stuff but it was all good.

"Ooh! Ungawa! We got the power! To destroy! White boy! I said it! I meant it! I'm here to represent it! 'Cause I'm a cool, cool, nigger from a cool, cool, town and it takes a cool nigger to knock me down! So don't you take my apple, don't you touch my teeth, 'cause I can kick your old tail any day of the week!"

At least that's how I remember it from a very, very, long time ago. Some of the lines don't make much sense to me so they might have been how adults changed some lines for the kids or just that my memory's wonky now.