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Chris Brown has deleted his Twitter account after an offensive war of words with US comic Jenny Johnson.

Johnson has spoken out about her dislike of Brown before, due to his assault on Rihanna in 2009, but this is the first time that he has responded to her.

Brown posted a photo of himself on Twitter with the caption, "I look old as f**k! I'm only 23..." which Johnson replied to saying, "I know! Being a worthless piece of s**t can really age a person."

Brown responded to Johnson with the tweet, "Take them teeth out when u Sucking my d**k HOE," to which Johnson said, "It's 'HO' not 'HOE' you ignorant f**k."

The argument continued with Brown then writing, "I should fart while ur giving me top." Johnson replied simply, "Your mom must be so proud of you," to which Brown said, "Mom says hello... She told me not to shart in ur mouth, wanted me to s**t right on the retina."

Johnson then said, "YOU FLIRT!!!" before informing her Twitter followers, "Okay. I'm done. All I got from that exchange with Chris Brown is that he wants to s**t and fart on me."

She added, "I have zero respect for a person who seems unapologetic for the terrible crime he committed and shows no signs of changing."

Rihanna 'in disguise' at Chris Brown's afterparty for his Carpe Diem tour.

However, she responded to Brown once more, after he shot back, "Just ask Rihanna if she mad??????"

Johnson retweeted Brown's comment adding, "Get some help. Seriously."

Brown told his followers, "To teambreezy... Know that I'm not upset. Just felt like entertaining the ignorance. These b***hes crazy.." before deactivating his account.

Listen to Rihanna and Chris Brown's duet 'Nobody's Business' below.

Chris Brown: his most stomach churning and offensive moments