Christ Brown (Creative Commons)

Johnson often uses Brown to make jokes, according to The Daily Beast.

This fight began with Brown Tweeting: “I look old as f--k! I’m only 23…” Johnson sent the reply: “I know! Being a worthless piece of shit can really age a person.”

Brown replied with numerous offensive Tweets until Johnson declared that she was done with the Twitter exchange.

Brown has gotten into exchanges with Johnson, and others, on Twitter before. Brown also fried off aggressive Tweets after the Grammys, which he later deleted, according to the Huffington Post.

Screenshots of the most recent exchange can be seen here.

Johnson is commonly cited as one of the funniest presences on Twitter. One of her most popular Tweets, "Call me old fashioned, but Chris Brown should be in prison," was retweeted 1,869 times.

Reach Senior News Editor Hannah Madans here.