A sophisticated passing system for when a joint is rolled and about to be smoked. If someone (usually the person who rolled it) calls 'three toke pass,' it basically means you have three tokes on the joint before you pass it. Usually, three toke pass is the default toke amount.
Guy 1: "Yo, dude, we doin' three toke pass, right?"
Guy 2: "Yup."
Guy 1: "Sweet."