The spelling of "OODP CDER" may appear nonsensical at first glance, but it actually follows a specific pattern based on the International Phonetic Alphabet (IPA). The string of letters represents the phonetic transcription of the phrase "would be cedar," using a shorthand system to indicate the sounds of each word. The "OO" represents the long "U" sound, while "DP" represents the "B" sound. "CDER" stands for "cedar," with the "C" indicating the "S" sound and "DER" representing the end of the word.