Janet Jackson is really sticking to her story that she lost 60lbs. in 4 months without plastic surgery " and she's lashing out against peeps who say she went under the knife."I could not believe how big I was, how heavy I really was," she tells Extra in an interview that airs tonight. "I would see myself in the mirror, but I wouldn't look too often. I didn't want to get used to that image." Janet insists that she lost the weight through healthy eating and rigorous workouts " not surgery which I'm totally convinced she had."It does drive me crazy," she says, "because I've worked real hard and I think it's really easy for [the tabloids] to write it off as [surgery]. It isn't hurtful " it just pisses me off. I want to kick some ass." But Janet isn't saying she's never had surgery. In fact, she talks about her schnoz job. "It's no secret. When I was 16 I changed my nose. Would I do it again? I don't know I've seen a lot of women that have been pulled and snatched, and it's not too cute." Is she talking about her sister, LaToya? Or maybe she considers her brother Michael a woman. Lord knows he's been poked, prodded, pricked and plucked more than anyone I've ever seen.