Lesson of the day for livin' in Southern California: the groups of men outside of Home Depot who flag you down like you're a taxi driver don't need to borrow a cell phone or anything, they're just looking for work. I learned this the hard way and rolled down my window and asked, "Do you need something?"
"You need help? Something, anything for us to do?"
"Nope. I'm good. Sorry. Thanks."
Then I sped off and tried not to look anyone else in the eye.