cart leaver

A person who 'ain't nobody got time for dat' to put their cart in the cart parking lot; therefore give someone the headache to crash into the cart and scrape Justin Bieber's Ferrari. More simply, a dumb ass who just puts their shopping cart in the middle of the parking spot thinking the cart has a brain.

Joe: Why are you late John?
John: Some dumb ass cart leaver left their cart in the middle of the parking spot at Walmart and I scraped Obama's Ford Escape.