Hatchbacking 

What you do when it's too damn cold for the outdoors. Any hatchback provides plenty of space for you and you're friend(s). Great for transporting illegals over the border too.
Ford Foci work best.

Its too cold to eat outside. Let's all go hatchbacking in Sergio's Focus.

Hatchbacking by DrAnalrapist June 22, 2011

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!

Hatchbacking by natedogg43434 February 18, 2011

Hunchbacking 

A romantic act between couples, like spooning, except the big spoon has no legs.

Frank is so sweet, he was hunchbacking me all night last night.

Hunchbacking by WillThePeople October 12, 2016