A full packet of Polo mints had to be eaten outright, against the clock (ending with a mouth inspection for illegal residue). Crunching was the only stipulation with no full-mint gulping allowed, and the packet was usually split open length-ways to allow for quicker access beforehand. Manic chomping on a gobfull of brittle mint shards invariably resulted in lacerated gums, loss of fillings etc, but a small price to pay for a shot at the coveted title, last known to be held by David Crake at an impressive 21.3 seconds.

The Polo Challenge can be adapted to form the Fisherman's Friend Supermatch Game. One Fisherman's Friend is pretty hot, and will clear out your sinusses. Three or four, and you'll be batting the back of your head and weeping steam. Put the whole pack in your mouth, and a curious anaesthesia will take you, and your mouth will puddle with spicy drool. Racing to eat the Fisherman's Friends in this state will result in you biting your own mouth to shreds, numb and oblivious to the trauma you are causing to gob and tooth.
As played by a rosy-cheeked, spangly-chompered teenage Shane McGowan.

Patrick offers this eye-watering advanced-level variant:

Two competitors would crunch-eat a whole pack of Extra Strong Mints as fast as humanly possible, then drink an entire bottle of lemonade in one swig. The last person to pass out/have a seizure/drown in their own fizz was declared the winner. A popular spectator sport.