The song 'Who's That Chick?' by David Guetta featuring Rihanna features the following line in the chorus:
She's been a crazy dicta, disco fever and you wonder...
Lyrics websites disagree on the word in bold: 'dita' seems to be a common alternative. To my ear it sounds more like /ˈdɪktə/ than /ˈdɪtə/ or /ˈdɪttə/. (You can listen here - the chorus starts at about 1:10.)
I can't find any definitions of 'dita' (or 'ditta' or 'ditter' etc.) that make any sense in the context of this song.
As for 'dicta', there is a sole entry on UrbanDictionary:
A woman that appears to be quiet when you first meet her, but once you begin unraveling her personality you realize that she scarily independent.
While this might fit the song, I can't find any evidence for it apart from an anonymous answer on Yahoo! Answers. The wording of the answer is very similar to that of the UrbanDictionary definition; both may well have been written by the same person. The definition happened to appear in December last year, not long after the song was released.
Perhaps the lyricist was out of ideas and decided to invent a new word.