To consume, in a single sitting, two 3 litre bottles of Frosty Jack white cider. Once completed the task is to successfully navigate your way back to a bed or other lodging without evacuating the contents of your stomach.
Steve R@lf: "Dude I tried the Matt Knowles challenge yesterday"
Everyone else: "Was your ordeal successful?"
Steve Ralf: "Sadly not, I barely managed one bottle before I simultaneously vomited and defecated myself"
Ross GR: "You fucking bender"