Try making up the rules to a game where you tie knots in a yo-yo string just to see if you can get them out:
I would solve this in a systematical manner through marketing. A family friendly version would provide epistemologically self-conscious material for debate, and be 100% made in the USA. The rules: The first player to construct a Gordian knot must give a brief history of Alexander the Great. No spitting. Players must remain seated to discourage Ben-Hur reenactments and other forms of horseplay.