Demonstrating Externalities

[TheFirstBornMagician]

Spraying too much of perfume is a negative externality as it takes away the ozone.

[Cmichfan789]

No, you boob. The marginal cost that the crowd has to pay to sit with the kid that smells like a middle school locker room (excessive axe) exceeds the marginal benefit that the student receives for spraying him self with that much axe.

Talking about the environment is also an example but you're taking the example far out of context.

[dmateer]

Thanks to Michael Zhao for spontaneously shooting this video! Adam Tuckman is the volunteer.