He was accused by Samari Rolle of calling him "boy" on December 3, 2007, during a game between the Baltimore Ravens and the New England Patriots. The alleged exchange occurred late in the game when the Patriots retook the lead with 44 seconds remaining. Several penalties occurred in the closing minutes, including an unsportsmanlike conduct penalty when Raven Linebacker Bart Scott picked up a penalty flag and threw it into the stands in frustration of hearing the banter of Rolle and McKinnely. After the game, Rolle vented in the locker room to the reporters, "The refs called me a boy. No. 110 called me a boy, I will be calling my agent in the morning and sending my complaint. I have a wife and three kids. Don't call me a boy. Don't call me a boy on the field during a game because I said, 'You've never played football before." The NFL investigated the accusation.