Here are twelve things, ten of which are considered edible, though obviously not by everyone:
Icelandic moss porridge
Cajun wild toad
Crunchy sand-bugs with honey
Stuffed baboon’s nostril
Ten of them are in the Oxford Companion to Food (you'll have to buy it: it's not online). The other two are merely creations of a diseased mind; see if you can decide which before you look at further details.