This song was featured in Warpaint debut EP “Exquisite Corpse”.
It is some kind of variation on a song called “My Guy”, made famous in 1964 by Marry Wells. Most of the lyrics are taken from “My Guy”, though the composition is different.
https://www.youtube.com/watch?v=4WT7nBGX5eU
This song alludes to Jazz legend, singer Billie Holiday.