As an intro, mares in heat open and close their vaginas to let any nearby eligible stallion know she's ready. This is called "winking".
Between classes one day two of my friends and I walked to anatomy lab, J-- telling us she "dimpled" a cop (meaning she put on her best innocent, dimply smile girl face) to get away without a ticket. M--, who is from Israel and sometimes doesn't always understand colloquialisms, was aghast. We understood why she was disgusted when we realized she had confused "dimpling" with "winking".