The document examines the varying meanings and consequences of the whistle gesture across different groups and cultures. It discusses the whistle's use among American baseball fans, European soccer fans, homeowners in Moscow, and the people of La Gomera who have developed a whistle language called "silbo". The whistle has positive connotations for baseball fans but negative ones for soccer fans and Russians. In La Gomera, complex tones and variations allow silbo to communicate specific messages over long distances. Overall, the document argues that gestures and symbols must be understood within their proper social and cultural contexts to determine their true functions and consequences.