Saying "Petticoat is your master and
forever horse you'll be"

The story:

When I first heard the song I thought this
line might refer to the wife making her
husband do heavy, menial labour, like a
draft horse. I had the sneaking suspicion,
however, that there was a perverted
double-meaning to the husband's role of
"horse". Then I read the lyrics, and
realized that my imagination is weirder
than I had thought.