Great comic strip Claye thank you for posting . Only blokes could invent a game called Cold Feet where you stand in freezing water until you can stand it no more , on a par with Thumpy Dubs where you knock your opponent or both fall from a bridge into freezing water [ there's a theme here somewhere]
There was Banzai which was all about challenges where the audience watching on their TV were asked to select the correct answer as to what happened from a selection of three choices but that may not be the one you are thinking of Rod. May have been Takeshi's Castle which was about endurance.
It was an endurance one I think. One was where they had to keep on drinking copious quantities of cold water and see who would last longest before dashing off to relieve themselves.