By Breaking Celebrity News Staff

He just pulled out of a concert in South America after protests from local women’s rights groups angered by his 2009 assault on Rihanna. Now Chris Brown has stepped into a vulgar war of words on Twitter with a comedy writer whom he called a “hoe.”

But plucky Jenny Johnson didn’t take the attack lying down. She took the opportunity to correct the singer’s spelling by telling him: “It’s ‘HO’ not ‘HOE’ you ignorant f**k."

The drama began on Sunday when Johnson landed the first blow by re-tweeting what Brown wrote alongside an Instagram photo of himself. The Don’t Judge Me singer said: “I look old as f**t! I’m only 23…” Johnson tweeted: “I know! Being a worthless piece of s**t can really age a person.”

Brown responded by writing: “Take them teeth out when u Sucking my d*** HOE.”

After pointing out the singer may have not wanted to compare her to a gardening tool, Johnson drew attention to some of the other sexually graphic insults he made. She wrote: “Your mom must be so proud of you.”

Johnson eventually tired of the argument, writing: “Okay. I’m done. All I got from that exchange with Chris Brown is that he wants to s**t and f**t on me.”

But Brown, 23, was not finished. After calling Johnson “worthless” and a “thirsty [expletive],” he wrote: “Don’t run for support now… Lol. Ur sic a comedic writer!!! If you can take a d***, u can take a joke.”

But Johnson had ended her side of the conversation hours earlie