A situation in which one consumes an enormous amount of alcohol, causing an individual to stagger about in a disgraceful manner, rambling on incoherently. Can lead to other embarrassing events such as performing card tricks that don't exist, and walking through ankle deep puddles without notice.
Brian: "Wow, Graham has really pounded through that whiskey tonight!"
Jeff: "Did he drink that entire bottle straight up?"
Brad: "Fucking rights.... He's gonna be sooo Jantzed tonight!"
Indian 1: "Hey Freddy, do you wanna go down to the creek and get Jantzed with me?"
Indian 2: "It sounds great but we'd better hurry...Lunch is in an hour "