The Daily News exposes a flasher in Park Slope, or at least points out that there's one prowling the streets. That's right, a sexual predator is creepily stalking stroller central. The paper reports that a "man exposed himself to a 14-year-old girl after pushing his way into her apartment building two weeks ago," saying he had something to show her as he chased her up the stairs. The man fled when the teen's family heard what was going on in the stairwell and came out of their apartment. The NYPD confirmed the 5:30 p.m. incident, "adding that 78th Precinct detectives are on the case looking for the flasher, described as in his early to late teens, wearing black shorts, a gray T-shirt and a blue hat." Meanwhile, the poor 14-year-old victim, who had just moved with her family from their native South Africa, is scared to walk on her own anymore.