Nicki Minaj to Ex Safaree -- Safaree's Too Dumb To Write My Rap (VIDEO)

Nicki Minaj wants to make one thing clear: "no bitch ass n****" wrote her lyrics.

We just got this video of Minaj in concert where she goes off on her ex, Safaree Samuels, who claims he ghostwrote lyrics in some of her biggest hits.

Check out the video ... she has unbridled contempt for Safaree, who she says isn't smart enough to own her words.