According to the label, the reason for such decision was because the title "Joker" and the lyrics are reminiscent of swearing and one part of the lyrics implied a physical intimacy between man and woman. 

Unlike KBS, SBS and MBC passed "Joker" as appropriate for airing.

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It was previously revealed that Dal Shabet were to make their comeback performance at KBS's  'Music Bank.' However the girls are in a slight predicament with the news of KBS's ban of the group's title track.

A rep from Happy Face Entertainment revealed that they will be making changes to the lyrics and applying for approval once again to KBS, revealing that they had no intention to imply inappropriate behavior. 

Meanwhile, Dal Shabet recently released their sexy MV for "Joker," which you can check out here!