LOL, almost daily occurence here in the Netherlands. The phrase "fietsie kopen?" (pssst... wanna buy a bike?) is part of popular culture. Some crackheads even run bike dens where you can pick up an oma bike or a 3-speed for 25e - you just need the right number to call. The police hands out leaflets to the freshman of my uni every year warning that buying a bike from a crackhead is a crime which will get you a crime record - bad new if you want to be in law, education or medicine because you won't be allowed to practice with one!