Here is a video with details on the video you posted. The video is not even showing Ram Jam.
The Story of Black Betty by Ram Jam
https://www.youtube.com/watch?v=m7rCvRSJjak
Yeah - that was linked at the start of the post - the whole idea behind the post actually.
The original singer said the song was about female stripper?/photo girl Betty Page. Makes sense when you hear the words.