Crazy; out of control.
Man, that guy's kerbatzoes!
Someone who refuses to pay for parking in a primarily pay parking environment, e.g. downtown in urban center, university, resident permit neighborhood. This person will circle until they locate an adjacent area with a few free parking spaces, and wait or circle the block until someone eventually leaves one of those few spaces.
I can never get a parking spot in front of my building because it's the one area downtown with free spaces, and there are always parking pirates circling the block--any open spaces are gone within a minute.