(Portland, OR)  --  Police are looking for a man who reportedly exposed himself to a nine-year-old boy in Northeast Portland.  Authorities say the flasher perpetrated the crime around five p.m. yesterday in the area of Northeast 45th Avenue and Stanton Street.  Yesterday's incident is one of a number of such incidents that have been reported in the neighborhood in the past few weeks.  The suspect is described as a white man in his 40s, five-feet-nine, heavy build, dark brown hair, and a short, scruffy beard, wearing a white t-shirt and blue boxer shorts.