Casu marzu is a traditional Sardinian sheep milk cheese that contains live maggots inside.

The false teeth [My thanks to Richard K for the following] Moshe has been living in Poland all his life, but just before the 2nd World War, he sees big trouble coming. So he sells all his assets, converts them into gold and then melts down the gold to have five sets of false teeth made for him. He flees Poland and after much travelling, arrives at Ellis Island, New York, where he is interrogated by an immigration official who also goes through the contents of his battered suitcase. When the official sees the 5 sets of false teeth, he asks Moshe why he has so many. Moshe replies, "As you might know, we orthodox Jews have two separate sets of dishes, one for meat and one for dairy products. However, I’m so kosher and religious that I also need to have separate sets of teeth." The official is confused. "Well that accounts for two sets of teeth. What are the other three for?" "Well," Moshe replies, "we ultra-Orthodox Jews also use separate dishes for Passover and I’m so observant that I need two sets of Passover teeth to go with the dishes, one for meat and one for dairy food." The official is still confused. "You`ve convinced me that you`re a highly religious man and I accept that you therefore need four sets of teeth. But what about the fifth set?" "Well, to tell you the truth, mister official," replies Moshe, "every once in a while I like to eat a ham and cheese sandwich."