Rule One - Down a shot each time one of the characters utters the expletives "s**t", "f**k", "t**t" "d**k" or "c***".
Rule Two - Each time Cook (Jack O'Connell) has an alcoholic beverage, help yourself to a tipple of your choosing.
Rule Three - Chug some beer whenever you see a flash of bum, boob or any other naughty flesh.
Rule Four - Crack into the vodka if Pandora (Lisa Blackwell) starts talking about getting "surf and turf" from one of the boys.
Rule Five - Every time a character buys/smokes/talks about drugs, help yourself to the rum.
Rule Six - Have a double and mixer for each trendy indie band you can identify on the soundtrack.
Rule Seven - Down a pint each time you spot a famous face or one time great comedian gettin' down with da kids e.g. Harry Enfield, Ardal O'Hanlon.
Rule Eight - Knock back another row of shots if you find yourself pining for Tony and the crew.
Rule Nine - Wheel out the absinthe if any of the loud-mouth characters is revealed to have a softer side, or if any of the timid ones are shown to be hiding a wild spirit.
Rule Ten - Finish all your remaining drinks if any of the storylines have the slightest resemblance to anything that's happened in your life.
This feature is intended to entertain only. Digital Spy does not advocate binge drinking