1. drivers who follow other vehicles too closely
2. people who have parties in parking lots before sporting events, typically eating and drinking near their vehicles

Examples

• The tailgaters behind us were driving dangerously close.
• Police issued tickets to several tailgaters on the highway.
• The tailgaters in the stadium parking lot were grilling burgers.
• Thousands of tailgaters gathered before the big game.
• The tailgaters set up tents and tables next to their trucks.
• Security reminded tailgaters to clean up after their parties.
• Many tailgaters arrive hours before kickoff to celebrate.