We hear that the boom in Fort Greene is attracting more than genteel brownstone residents. One concerned homeowner on South Elliott Place has tipped us off to a rumor that her historic block is about to get whacked by a nasty fast food one-two punch. Two shops on opposite corners of Lafayette and South Elliott are in the process of changing hands. According to a workman on site, a Blimpie is going into the Triangular Floor space (top) and a 24-hour Dunkin’ Donuts is taking over the former bodega (bottom). We hope the workman was just having a little fun at a nosy neighbor’s expense. It won’t come as a surprise to anyone that we think that this stretch of Lafayette needs fast food restaurants like a hole in the head. We bet that the owners of the upscale restaurant Gia across the street agree.