The classic game theory dilemma where two prisoners are individually offered a deal if they’ll betray the other prisoner. But if they both betray each other then it’s bad news for both of them. What they choose depends on what they think the other will choose.
Also the name of a killer workout whereby you each do 20 + 19 + 18 + …burpees, because the burpee is the ultimate exercise if you want to stay fit in a prison cell.
HT: R Feldman