Typing Japanese is most often phonetic so an engine has to convert kana into kanji, but it is not always perfect. This song is about people who can't spell (typing "fuinki" instead of "fun'iki" and wondering why it won't turn into 雰囲気) and bizarre sentences arising from the Japanese IME's failure to properly parse a kana string (turning desupenajindaikiwotsukete into desu pena jinda iki-wo-tsukete "desu pena jinda add high spirits" instead of DESU PENA jindai ki-wo-tsukete "the death penalty is severe; take care").