Godfrey claims that this is an osage orange...I think it's either the fruit of the tree of knowledge of good and evil; or, my pet theory - it's a mutant mystery fruit! I took it with us from Oxford to Cincy. I wanted to bring it home, but was afraid of what would happen when it was x-rayed at the airport. The x rays would have very likely caused a metamorphosis leading to an angry mutant fruit that eats people's brains. No one wants that. Unless I could control the mutant fruit. It would be my unholy evil fruit henchman! Muah ha ha ha ha ha ha!