VAN NUYS - As they pass time on the corner of Kester and Oxnard streets looking for work, day laborers tell stories. They talk about a man who drives by in the afternoons, pretending to need someone to mow the lawn, trim some trees or paint the garage. What the man really wants is sex. And he's looking for a man to hire for the day. "I tried to ask him what kind of work he wanted, and at first he said one thing, then another, so I didn't want to go," one worker recently said at the Van Nuys...