Jack Osbourne thought he was going to die on a climbing trip in California.

The 'Celebrity Adrenalin Junkie' star could feel his "body shutting down" when he got stranded at the top of a rock face while mountaineering with friends.

Jack Osbourne tells girls to "f**k off" if they flirt with him.

The 'Adrenaline Junkie' TV show host hates it when women he doesn't know try to speak to him and will shout expletives at them until they leave.

Simon Cowell partied with lingerie-clad models at the infamous Playboy mansion on Saturday night. The TV mogul attended magazine founder Hugh Hefner's annual Midsummer Night's Dream party, held at the 83-year-old's Los Angeles home.

Jon Voight, Shaquille O'Neal, Jack Osbourne, James Van Der Beek, Ryan Seacrest, Randy Jackson, Shannon Elizabeth, Jon Lovitz and Hefner's former girlfriend Bridget Marquardt also attended the bash.

Jack Osbourne is obsessed with guns. The 23-year-old TV star is so "gun crazy" his father, legendary rocker Ozzy Osbourne, worries Jack will end up hurting himself.

He said: "Jack is gun crazy. Over here in the U.S. you can buy real guns. I have this horrible thing - I can see this movie in my head where he's messing around and shoots himself in the foot."