short for uber-Jackolas. a demonic resurrection of Saint Jackolas after he has died. uber-Jacko has uber-Jesus Juice which contains the extra ingredient of peppermint and a dash of pure oxygen. more of a danger to the youth population than measles and meningitis combined.
"capable of winning any checkers game, no matter how many opponents" - Rob McLean, uber-Jacko victim
by failure33object April 26, 2005