Word of the day: cinq à sept (m) - literally translated means 5 to 7.

In France, "cinq à sept" is used to refer to the person you meet to make love with between 5 pm and 7 pm, before going home to your spouse. It can also be used to refer to the extramarital affair itself.

In Quebec, it is used to refer to happy hour - the alcoholic variety.

On a related note, here's an article from Cafe Babel on 69, French Style. I like how "grimper au rideau" (to climb up the curtain) suggests a good and proper orgasm in France, but in simple Canadian French, implies being irritated. I know French French and Canadian French can be very different, but man, quelle différence!