What Rednecks and Hillbillies say when they get a brand new tractor, get engaged too there sister, or find a year's supply of beer, and a 12 gauge buckshot in the lost and found.
A jerk, asshole, suspicious roustabout, a no-good, dumb ass, spacy low IQ or some other similar form of lowlife prancing about a small town with nothing better to do.
A non descript exclamation which usually accompanies alot of hooting and whistling at whatever is causing the excitement. Most likely coined in the southern states of north America (eg Texas). Can also be used to punctuate traditional country and western music.
It might also be exclaimed by the rider of a bull or bucking bronco at a rodeo or their spectators.