Rapper Chief Keef Threatens to ‘Slap’ Katy Perry After Pop Star Disses His Song on Twitter

Controversial rapper Chief Keef is coming under fire after he tweeted to Katy Perry that he would slap her, among other things, after the pop star tweeted about one of his songs, the Huffington Post reports.

The incident started after Perry, 28, tweeted that she had "just heard a new song on the radio called 'I hate being sober' I now have serious doubt for our world."

The 17-year-old rapper was clearly offended by the tweet and responded with some vicious and harsh words for Perry.

Keef also issued an apology tweeting "sorry too then" with a sad face.

The young rapper has faced a lot of backlash over his violent and offensive song lyrics in the past.

NewsOne reports Keef was criticized for a song that threatened to kill a woman who would not perform oral sex on him.

The lyric "You ain't gonna let me f**k you, and I feel you/But you gone suck my d**k or I'll kill you" caused such an outrage that a group called "Girls Like Me Project" begged Chicago Public School to not let DJs play the rappers music at school functions.,

Keef has also been accused in the death of rapper Lil Jojo. The rapper's mother, Robin Russell, told BET she believed the rapper played a role in her son's death. She told the station that she did not think he actually pulled the trigger but believes "that he hired a hitman and also fears for her life."

Many people still believe Keef was involved after he rapped about killing a man in one of his songs. Trouble doesn't end there for the rapper. Last year, he was sued by a Chicago 8th grader for child support.

TMZ reports the girl filed a petition against Keef for a daughter she claims he fathered back in 2011. The girl sued the rapper for "an undisclosed amount of child support, including health insurance and other medical expenses."