An explorer was trekking through a remote jungle when he was captured by logic-loving cannibals.....?

he was then brought b4 the chief n told,"u may now spk ur last words. if its true,thn we'll burn u at the stake. if ur statement is false,we'll boil u in oil." the man thought 4 a moment, thn made his statement. perplexed, the clever cannibals cldnt do nething but 2 let him go. wot did the man tell them?? plz answer this riddle if u kno the answer.. thnx!!!!!