The 22-year-old rapper lashed out at Mother Monster on her Twitter page, accusing her of swiping the title "Red Flame" for a song Gaga recorded that may or may not end up on her forthcoming third studio album, Artpop, dropping in November.
"@lady gaga make sure u let them know where u got the title for red flame from. U stole that from the demo I sent u," Banks tweeted on Monday. "Life is great. You can have it. Plenty more where that came from. Seriously…This one is free. Next time I'm charging."
No word what the pop superstar has to say about that. Banks' posts have since been deleted, except for the last one.
But her protest is odd considering the "212" crooner told Brazil's Mix TV (via MTV) in October 2012 that she was collaborating with Lady Gaga on a pair of new tunes, one of which was the track in question.
"I worked with Lady Gaga, but I worked with Lady Gaga from afar. We worked via email and via Internet," said Banks at the time. "We have a song called 'Red Flame' and a song called 'Rachet,' but I don't know what she's doing with it. She's going to release it when she wants to release it."
It turns out Azealia may have been responding to a fake tracklist someone posted online that included "Red Flame ft. Rihanna." For her part, RiRi subsequently posted on her Instagram that the collaboration with Gaga wasn't real.
Of course, this isn't the first online beef the rapper has had with Lady Gaga.
Last month, she not so subtly knocked the "Judas" hitmaker on Twitter, claiming the latter ripped off the mermaid look she'd been rocking the past year.
Lady Gaga had sported the weekend before strategically placed seashells over her breasts and a shell-adorned thong when she performed at the 2013 MTV VMAs.
In any case, when the Grammy winner performed on Good Morning America last week, she addressed her budding feud with Banks when she was overheard telling fans privately that Azealia's "got a bad attitude."
Somehow, we doubt her impression has changed much.