GET LOST, BUM

EATERIES and publicists, beware – party crasher “Chris Callahan” is still on the loose. He was recently spotted at the opening of restaurants Metro Marche and Fireside, “scampering through crowds downing cocktail after cocktail.” The mooch used to pose as Times fotog Bill Cunningham, but now tells publicists he’s Cunningham’s assistant. New York magazine last year reported the stunt was “well known at the Times” – and he’s still not fooling anyone. At Metro Marche, he was told, “Thanks for crashing, but you’re done,” our spy said.