Ok thought this up now, the rules are, one person thinks up a true thing thats funny/foolish then the next person try's to think of something even better, if its funnier/dumber think up a new thing.
for example.
In japan it was illegal to save someone from drowning as it will interfere with there fate (or was it china)
next person would say something (related) thats better like.
You cant sleep with a goat on your honeymoon (a law somewhere i forget where)
ill start off.
Originally you ate the skin of potatoes instead of the inside.
(something fruit/veg related now)