Tweet: "Mr. Keef! I'm sorry i I offended you. I heard a lot of people guesting on the song & didn't even know it was you in particular. 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."
"I Kissed a Girl" singer Katy Perry explains why hearing Chief Keef's "I Hate Being Sober" featuring 50 Cent and Wiz Khalifa made her "have serious doubt for the world."
(Photos from left: Johnny Nunez/WireImage, Brendon Thorne/Getty Images)