The song was inspired by John Fogerty's visit to a fortune teller in San Bernardino, which is pronounced "San Berdoo" in the song. The fortune teller told Fogerty that he should avoid airplanes, inspiring the line "Fly in no machines." The fortune teller also told him that he had 13 months of bad luck ahead, inspiring the "13 months of bad luck" line.
The Naughty by Nature hit "O.P.P." doesn't have any curse words, but many oversensitive radio stations played a "clean" version with the word "kitten" edited out, surely the first time that word was censured.