Presser le citron
"Presser le citron" or "presser quelqu'un comme un citron" both mean to exploit someone to the maximum.
It's unusual to find lemons ripening with their leaves still attached on supermarket shelves these days, although it was a more common practice twenty years ago. What luck I had a camera in my bag when I came across these at the grocery store.
©2013 P.B. Lecron