warm things up by asking the audience if they saw the version of COPS on TV when various crooks were notified by phone that they won a TV and needed to visit a specific address to collect their prize.
After you get the group laughing and texting via their blackberry devices, change your tone of voice and let them know that your presentation is actually a front for the FBI and the whole lot of them are about to be busted for appraiser coercion, mortgage fraud, collusion to the extent that the RICO Act might be imposed on the whole lazy, dumb lot . . .