We had the honor of having Janice Dickinson -- the world's first supermodel -- host "TMZ After Dark" ... and she turned the bus into a runway, having passengers serve catwalks for her, as she judged them in typical "America's Next Top Model" style. Speaking of 'ANTM' ... Janice says she's "tired of talking about 'America's Next Top Model,'" explaining how she's sorry she did the show, and actually thinks Tyra Banks is a BITCH -- she made sure to tell us twice!! Janice went after Tyra for not