A woman left lonely will soon grow tired of waiting,
She'll do crazy things, yeah, a lonely Caucasian.

The story:

It was just one of those times where you are listening to a song for the first time and you are not really paying attention, and then your brain connects the dots for your as well as it can using different circumstantial evidence: "Yeah, OK, this song is from the sixties, when sexual liberation and racial tention where hot topics. Its perfectly logical that she would refer to herself in terms of race."