Gltich pking was a old glitch found by the users of godzhell using the the ::tele command.
How the glitch worked, in most places glitch pking worked. To find out if glitch pking worked, you hit attack "player". If it said move deeper in wilderness, the spot could work for glitch pking.
How they did it. Players would use a Sara staff or an AGS with a pring then, they would do ::tele 99999 99999 and when the clicked it, they spammed attack on the desried player to kill.
This is how so many rares were obtained, lost and gained.
NOTE: THIS DOES NOT WORK ANYMORE. So don't try it.