here's what happened: this one guy basically turned around and put his back to the stage and gave a peace sign, and his friend took a picture of him, obviously annoying Tweedy. then to make matters worse, they switched places and took another pic. tweedy's reaction was something along the lines of, "i'm not a monkey in the zoo, motherfucker." and a good point at that. the kicker of it was that the 2 guys had snuck down to the front from god knows where, had no business being there, and cost the crowd 2 songs (according to the setlist): Mountain Bed and California Stars.