Game where the objective is to call out "Chubby" when you see a Mitsubishi Express van. If you see a van that is of the same type but not a Mitsubishi, then it is not a chubby. Sometimes you call out "Fake Chubby" if it is a van of a different brand.
The aim is to call "Chubby" on a van before another person and call more chubbies than another person.
It is a good game for a long car trip. You may even like to tally points or play where you get to punch someone if you call chubby and get punched if you accidentally call chubby to a fake chubby.