Jack Osbourne 's tearfully remembering a moment he and his late father, Ozzy Osbourne , shared a couple of weeks before his death ... and he says, in hindsight, it couldn't have been more perfect. Ozzy's youngest child got emotional Monday on 'GMA,' when he opened up about the pain of losing a parent. He also talked about how his mom, Sharon , is handling life without Ozzy ... saying, she's "okay, but she's not okay." Jack started choking up when he talked about Ozzy being clean, sober and in "