Originally, this was "Let's Get Retarded," which is how it appears on the album. When it was released as a single, it was changed to "Let's Get It Started" so it would get radio play. The phrase "Let's Get Retarded" is a West Coast term that means to go crazy on the dance floor (synonyms are "Go Dumb," and "Get/Go Stupid."). The phrase is chanted at clubs and dances and used in everyday slang, but the word "Retarded" is offensive to people who see it as put-down of those who are mentally challenged. (If you want to be really politically correct, the term is "Cognitively Impaired). Later copies of the album contained both versions of the song.
Christina - North California