After last summer’s Assassins, Mario Cantone is back on Broadway with Laugh Whore, a one-man show full of cracks on past projects — but not a peep about his stint on HBO’s Sex and the City. Whore is produced by HBO rival Showtime…could that explain the lack of Sex talk? ”It was a great experience,” says Cantone of his role as Charlotte’s ear-splitting wedding planner. ”It was kinda too perfect to be funny.” Dang. We wanted dirt!