Jordin Sparks is going in hard!

While the singer is known for her good-girl persona, she's not holding back in her new remix of Drake's single "How Bout Now" -- dropping f-bombs while trashing her ex-boyfriend Jason Derulo.

"Member I deleted all my other guys numbers off my phone for ya ... member when you broke your neck and I had to wash your back for ya ... probably don't remember half the s**t that I did for ya," she sings in the track.

Of course, the "American Idol" winner is directly referencing her ex fracturing his neck in January of 2012 right there ... proving that yes, the changes she made to the original song are definitely about Jason.

"Always been mommy's little angel ... then once you blew up your head got big and you started changing," she later coos. "Can't believe all the things that you started saying ... like I'm with you for fame and your name what? What your dying to be is famous."

The rest of the song stays close to Drake's version, including the chorus "You ain't really f**k with me way back then, but how 'bout now? Cause I'm up right now, and you suck right now."

"Every relationship has their ups and downs and you know, when you start having more downs than ups, you gotta take a look at your relationship and be like, 'Is this something that I'm supposed to be doing?'" Jason previously said about why they split.

When asked how he broke things off, Derulo admitted he did it "over the phone" because he "wasn't in town." Ouch!