April 18, 2012 at 7:34 AM ET
She's been an international entertainment superstar for 30 years, but Madonna has another super role in her life: She's a mom of four. And as she told "Rock Center's" Harry Smith in an exclusive interview, glimpsing a photo of her 15-year-old daughter, Lourdes, puffing away on a cigarette recently was not a happy mom moment.
"(I) wasn't very happy," she said, admitting she's a tough parent, "but honestly, I don't think I'm as tough as I should be. I think I need to be maybe tougher. It's hard -- every day is a negotiation. But cigarette smoking I'm not very fond of -- for anyone."
Sure, Madonna smoked in a recent video, but when Smith pointed that out, she fired back with a small smile, "I don't smoke. That's just an accessory, Harry. There's a difference. (Lourdes) smoked that cigarette before I did that video!"
Smith stopped by TODAY Wednesday to share select clips from his exclusive interview with Madonna, and showcased one where she spoke about, well, being Madonna. "It must be hard, because I complain all the time," she said. "It's pretty challenging. But so far I've survived with sanity and humor intact."
But her kids are seeing a different Madonna from the ones fans know. She explained that they get the version "that comes home and says, 'Have you done your homework?' and 'Why are you wearing that?' and 'Why did you say that?' and 'What are you eating that for?'"
Check out more of Harry Smith's chat with Madonna on "Rock Center with Brian Williams" tonight at 9 p.m. ET.