you were at a Metal festival, sitting on the sidewalk drinking a beer while watching the bands go on and off the stage, there were a lot of people and a lot of noise. However, your attention was attracted by a band in particular... or rather... by a guitarist in particular, he was huge and muscular. After their performance the band left the stage and you looked back into space completely lost in your thoughts, but you didn't notice the guitarist behind you “Umm, excuse me?”