The motorized wheelchair shopping cart that gigantically fat people use at the grocery store because they are to fat and lazy to walk.
I spent two hours setting up a soup display at work and then suddenly some lard ass wrecked into it with a fatmobile.
by chester B. Arthur November 30, 2008
1 more definition
1. A small black car, which turns you into a laze.
Matty has a fatmobile.
by Craig V November 19, 2006