I get it cracking like a bad back
People with bad backs gets relief by going to a chiropractor and getting them cracked.
When Nicki says she gets it “cracking,” she is referring to the fact that wherever she goes she gets it popping. She is popping (the best). Cracking like a bad back extends the metaphor to give it a double meaning.
To help improve the meaning of these lyrics, visit "Stupid Hoe" by Nicki Minaj Lyrics and leave a comment on the lyrics box