“If we had a slob in the White House, all the hipsters would turn into some walking Chippendales calendar,” Mr. Peres said. Instead, the streets of Williamsburg are crowded with men who are, as he noted, “proudly rocking a gut.” Mr. Peres’s magazine has a term for these people: the new “poor-geoisie.” But the people lining up for $13 lobster rolls at the Brooklyn Flea last weekend hardly looked as if they were worried about making the rent.