Superstitions around the world
In Japan, it is considered a bad omen if you break the cloth strap on a traditional wooden sandal. Sleeping with your head facing north is commonly avoided this is because the dead are buried facing north. Also, bad luck will come to you if you eat eel and melon in the same meal. That last one doesnt sound too difficult to avoid.
Read more about Japanese superstitions at www.nihonsun.com.