Hatchbacking

Very similar to tailgating where one or more people drink and/or make food in a parking lot before sporting or other large events, (usually football games or concerts) but the gathering's specifically held behind a hatchback vehicle which contains a pullout cooking apparatus (grill, hot plate, etc.).

We were tailgating before the game but since it was behind John's 2011 Kia Sportage with the pullout hatchback grill option, we were technically hatchbacking!