there are numerous Greek traditions and superstitions and they never fail to make me smile. On returning from a trip to Istanbul I visited a friend with the gift of Narcissus oil, a rich strong fragrance. Overjoyed with the gift he ran off and returned with a coin that he insisted that I took from him, it is believed that if it is not taken then your friendship would be at risk, who am I to argue? here are a few more that may be of interest http://realcorfu.com/greek-superstitions-customs-and-traditions/