his hair , carefully combed and parted earlier , was now brushed straight back to give it the look of a partially grown-out crew-cut , not unlike those worn by many of the customers in the place ; his slightly too-short slacks revealed white cotton socks and scuffed black u.s. army dress shoes ; his shirt , worn outside his slacks as is the custom , was long-sleeved and the top button was buttoned , as if the man was less than proud of revealing any part of his body .