siditty etymology? BE for feeling superior(1967)

[Mullins, Bill]

>  Way back in the
> day, there was a song that had the following call-and-response:
>
> C: My gal is red-hot!
> R: Yo' gal ain't doodley-squat!
>
> This song was in origin R&B, but the version that's usually
> played on oldies shows is the rock-a-billy cover.

Jason D. Williams, who performs as "the Bastard Son of Jerry Lee Lewis",
has a rocking version of this.