“It's funny because that's what the doctors say when they meet the family," he added. "They always come back and say, ‘You know, [her problems] are inherited, right?’

“It’s just so sad. It's shared equally from both of her parents.”

He told Us the singer doesn’t “trust anything that her family says? Not a g----n thing.”

“They show up to the house like hillbillies, texting me,” Lutfi continued. “I find out that they’re outside, and they go, ‘You better let me in the gate, you ass.’ So I go, to Britney, ‘Your parents are here, let them come in and yell at you and scream at you. If anything else goes on, I'll throw you in my car and take you out of here.’ She said, ‘OK, fine, baby.’

“I let them in. Instead of going to see how Britney is, they come bouncing through the doors. They scream at me, ‘Why the f---k are you talking to Barbara Walters?’ I swear to God that's all they were saying.

“The dad pushed me in the chest and said, ‘Get the f—k out of here.’

“The dad gave up and then the mom tried to talk to her, but Lynne was like, ‘I gotta get my beauty sleep, I gotta get my nails done, I gotta do my hair.’ It was just so sick. We made the mom stay.”