people belonging to groups like these are so smooth and stealthy they are often reffered to as "urban ninjas"
"No, I'm not letting you out! I don't want you getting into an accident like those teenagers on the news! Joyriding is dangerous!"
"Idiot! Why did you say joyride? You should have said you were going to McDonald's or something. You know your mom worries! Kidding me? Fucking... joyride... idiot!"