Digit Wrestling
A game played typically by a group of Royal Marines or vetted non-Royal Marines where three or more adult males drink ten or more pints of beer, strip naked and proceed to wrestle. The winner is determined when the first saliva drenched digit or finger is forcibly driven into another males poop shoot. The reigning title holder is currently named "Dutch" but proper names have not been divulged.
My arse is very sore today. I must have lost at Digit Wrestling...and I'm even upset.