Tujia people in China are to cry every night for an hour the entire month leading up to the wedding. The bride’s female relatives will join her over time and use a special ‘crying marriage song’. Also, the bride must cry at her wedding or be named a laughing stock by neighbors.
#18 Same in Germany, it's the sign for "a@#$$%e". Mostly used while driving with the car and showing some idiot his bad driving. Only used to show somebody bad behaviour, not if you are angry. Differs to the middle finger a little.