This was probably the nastiest, scariest and quickest celebrity Twitter feud of all time.

Katy Perry took to Twitter to give her honest opinion about a new song, writing, "Just heard a new song on the radio called ‘I hate being sober’ I now have serious doubt for the world." Well, turns out that song was by 17-year-old rapper Chief Keef and, needless to say, he was not happy about what she thought.

Is it time to add Katy Perry to the long list of things Chief Keef doesn't like?

Instead of taking the high road and just letting it go, the rapper took to Twitter and actually threatened Katy! “Dat b--ch Katy Perry Can Suck Skin Off Of my D--k,” he tweeted, followed with “Ill Smack The S--t out her.” (In case you haven’t picked up on this, maybe it’s not a good idea to mess with Chief Keef.)

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Soon he tweeted, “New Song Katy Perry Coming Soon,” which obviously meant he wouldn't be rapping her praises, causing Katy to reply by eating her words and offering up one big apology. “Mr. Keef! I'm sorry if I offended you. I heard a lot of people guesting on the song & didn't even know it was you in particular,” she wrote. “Actually... I'm a fan of your 'Don't Like' video tbh. I was really just having a general opinion on our generations desire to be constantly intoxicated. Believe me, I'm a lover not a hater. X”

Chief Keef’s response? “Oh. Im Sorry Too Then.” Well, that was easy!

What do you think about Katy’s feud with Chief Keef?

Did he take the criticism way too far or should have Katy just never said anything?