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Katy Perry is not a fan of the new Chief Keef song, "Hate Being Sober."  The pop star took to her Twitter account earlier this week, saying she'd just heard it on the radio and it gave her "serious doubt for the world." 

She's now apologizing to the rapper but sticking to her ground when it comes to content that glamorizes alcohol and partying.  On Thursday, Katy tweeted that she didn't mean to offend Chief Keef and didn't even know it was his song at first.  She continued, saying that she just has "a general opinion on our generation's desire to be constantly intoxicated."  To make sure there were no hard feelings, Katy added, "Believe me, I'm a lover not a hater."  

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