The end product of a Japanese family car after a 16-year-old gets done with it. Makes more noise than power. See: ricer, rice boy.
"Man, listen to that fart cart. Is the exhaust supposed to smoke that much?"
a foldable shopping cart often seen being used by the elderly and other pedestrians to haul their groceries home.
don't forget to bring your fart cart to the farmers market! you know you always buy more than you intend.