A disagreement on social media turned into a police incident when two men from Watertown decided they should decide their argument IRL. At 11:10 p.m. on March 23, Watertown Police received a report of a two men fighting in the parking lot next to Dunkin’ Donuts in Watertown Square. The men were yelling at each other when police arrived and they were separated, said Watertown Police Lt. James O’Connor. “Both had consistent stories. They were involved in an argument on Facebook,” O’Connor said.