Janice Dickinson stopped by Hiro Ballroom last night to mix with her target demographic, the gays. I greeted the irrepressible minx by the bathroom, where we chatted, naturally, about how great we both looked. When I told her my secret is Vitamin E oil, Janice said, “But Colacello’s an Italian name. It must be OLIVE oil.” As she pranced into the loo, I realized the kook had thought I was writer Bob Colacello the whole time! She re-emerged about 10 minutes later, by which time she’d seen the light (no doubt in addition to hundreds of gays peeing and doing coke). “I know you’re not Bob Colacello!” Janice purred, graciously removing her pedicured foot from her lacquered mouth. A nice gesture—but AM I Bob Colacello? If the original supermodel says so, I’m starting to think it must be true.