When I am in a crosswalk situation with a lot of people around, for some reason I always want to be leader of the pack. I make it a point to watch the lights/cars and start crossing the street the very second that it is safe to cross. I want everyone to be thinking, "Whoa, hold on a second there buddy, it's not safe to cross ye-- Oh. Well, I stand corrected." In the back of my mind, when I execute a great cross (way before the light comes on and shit), I am surely thinking "This is going to get me so much fucking pussy."
P.S. A related syndrome, if I'm walking on a narrowish sidewalk, and there is someone walking in front of me, I will sometimes start walking really fast and make a semi-show out of going around them like they were really holding me up by walking so slow, when in fact the pace was quite comfortable.