Remember when all the bitching came from Park Slope (like, oh, yesterday), but you never heard a peep from its modest-mouse cousin, Windsor Terrace? Well, now they're getting vocal up in the WT. Last week, they bloggishly mangled a News-writer neighbor who looked down her yuppyizing nose a bit at Farrell's bar. Now they're ganging up on the group Transportation Alternatives for wanting to make Prospect Park car-free, which the WTers say would push all the cars into their hood. The head of TA argues against the theory that "the movement of traffic is like water ... if it doesn't go on one street, it will go onto the next street," but those Terracians are now empowered. Watch it or you'll be the one who's all wet.