I have never heard the expression but my best guess would be that it refers to a woman who is all business in her daily life but comes alive on the weekends ( speaking particularily of her sexuality). But it's just a guess.

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The practice of putting women on pedestals began to die out when it was discovered that they could give orders better from there.~ Betty Grable

If I wanted your opinion, I'd remove the duct tape and ask you for it.~ Me
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One man's dream is another man's nightmare~~~~> §¤ Lilith ¤§
~>My Scribbles<~
==>Gone Shopping<== ~Just a Quickie~ *~A Celebration Vacation~* ~Surprises~ Sleeping With the Window Open
What Did You Do Today? Self Defense Class ~Short Sweet Snippets~ § Summer Spin § Story Challenge Submission Pajamas