Chief Keef Tells Katy Perry “Suck the Skin off My D*CK” SHOTS FIRED! www.mtv.com reports Katy Perry set off fireworks and angered Chief Keef by dissing his music, but now the pop queen has apologized to the 17-year-old Chicago rapper. It all started on Tuesday when the “Wide Awake” singer logged onto Twitter to voice her opinion about Keef’s music. “Just heard a new song on the radio called ‘I hate being sober’ I now have serious doubt for the world,” she wrote. Keef caught wind of the jab a few days later, and on Thursday night he got fans everywhere talking with his foul-mouthed and threatening response. “Dat bitch Katy Perry Can Suck…