Here she goes off again. I can just picture this one. Mary J. Blige punched husband Kendu Isaacs in the face at her record release party at club M2 Tuesday night. The singer slugged Isaacs, drawing blood, after she thought he was flirting with a waitress. One witness says “She turned to him and was screaming, ‘You’re not going to ruin my night,’. “They got up in each other’s faces before someone tried to separate them, at which point she shoved the guy aside, pulled back and popped [Isaacs] in the face.” They said Blige, Isaacs and their entourage were whisked through a door to the attached club Pink, which was closed. The witness, which does not want to be identified and remains unknown relates, “She was yelling at him, ‘What are you gonna do, Chris Brown me?’ Four of her bodyguards and two of the club’s kept them apart.” Isaacs was kicked out. Blige went to the bathroom to fix her hair and makeup, but soon fled, creating an uncomfortable scene for party goers Jay-Z, Beyoncé and Busta Rhymes. Her rep said only, “People lie and don’t know what they’re talking about.”