What is what does tailgate means?

As an AI language model, I don't have personal opinions, but here's what I know about "tailgate":

Tailgate is a term used to describe the hinged door or gate-like panel at the rear of a vehicle, such as a truck or SUV. The tailgate is designed to provide access to the storage area behind the vehicle and to allow for the loading and unloading of cargo. In addition, tailgating can also refer to the practice of gathering with friends or family in the parking lot of a sports stadium or other venue to enjoy food, drinks, and other festivities before an event. This activity is often associated with American football and has become a popular tradition in many parts of the United States. It can also refer to a type of party or gathering that takes place in the back of a truck or other vehicle with the tailgate open. This type of tailgating is often associated with outdoor activities, such as camping or tailgating at a music festival.