50 Cent and Teairra Mari’s feud is reaching new levels of petty.

After unleashing her “I Ain’t Got It” track, Teairra Mari decided to sell merch inspired by her 50 Cent diss. But according 50, she forgot to register the domain IAintGotIt.com. So in typical 50 fashion, he seized the opportunity to scoop it up and sell his own merch. He registered the domain and claims to have also filed a trademark for Mari’s catchphrase.

“Somebody forgot to trademark this,so I’ll just take it,” said 50, while taking another shot at the singer. “you little Cum 🗑,” he added.

50’s website is selling $35 T-shirts with the phrase “She Ain’t Got It,” as well as tote bags and iPhone cases. He’s also offering a promotional code “BitchAintGotIt” for $30 off $200 orders. Meanwhile, Teairra is still selling her own “I Ain’t Got It” merch via a web store.

Earlier in the week, the “Love & Hip Hop” star dropped her “I Ain’t Got It” diss, on which she called 50 a “lame ass ni**a” and said that he will never see his money. “No, I ain’t got it / Oh boy I’m poppin’,” she sings. “I’m taking off like a rocket for 30,000 / That’s what y’all loaned.”

The two have been at odds since 50 won the revenge porn lawsuit filed against him by Teairra. In January, a Los Angeles judge dismissed all claims against the G-Unit mogul and ordered that Mari pay $30,618 to cover 50’s legal bills. Last month, he served her with legal papers, but still hasn’t seen payment.