KEWL. Time to head to the hood. Walk around with a cheap cell phone, tell some dude that your phone doesn't seem to be dialing out, get him to take a call (thereby getting his number), and tell him thanks, ask him who he is. Replay that in the mall and street corner 40 or 50 times in a day you're bound to hit on a gangbanger somewhere.
Sounds like a plan.........