Spring is upon us and, with NYC bike month starting Thursday, the surge in bicycle commuting is expected to continue apace. But an increase in bikes also means more bike thievery – as one trusting bike owner found out last week when he let a stranger “try out” his ride.

And just because your bike is locked doesn’t mean it’s safe. In 2006, this video surfaced showing how little passersby seem to care when someone is stealing a bike; now a duo of veteran cyclists have made an amusing ‘Dos & Don’ts’ video to inform new bike owners on proper security methods. [Via StreetFilms.]