Might be mistaken but I believe the female vocalist is Millie Jackson. Damn she put out a lot of great music. Had an album called, "Shit On Your Fingers" that was a killer. Think it was one of her live concert albums. Might be able to find some of her stuff on YouTube.
All this played off that old, "All Blacks have big dicks," myth. Which we don't. Just like all Whites don't have small dicks. Most of what you find on the net these days called porn are pumped up. But, since the porn isn't really "Porn," who cares? Or should I say, back in the day, there were Adult Movies; this crap they put out today, yeah, that's porn. LOL! But know what; we still watch it and like it just the same. Fap, fap, fap!!