Any duration of time that can be perceived to be crunk, or full of laughter and enjoyment for all parties involved; sometimes (but not necessarily) involving alcohol or marijuana.
A tradition in notorious student party town Dunedin, New Zealand. Involves dressing up in a group with a common theme, drinking very early in the morning (and continuing all day) and making your drunken way to the Cook bar for a day full of drinking.
Is now banned from Dunedin thanks to the university opposing the liquor renewal of the Cook.