This is true 99% of the time. I first witnessed it back in 1998 when I was playing a shit load of Duke Nukem 3D online. One day a guy went crazy after getting owned and started telling people to meet him in person so he could beat their ass and whatnot. By the time it was over, this kid made himself out to be a street fighting gladiator that benched 350 lbs and ate grizzly bears for breakfast. Later on his pic surfaced and he looked more like this.