Video: When most escalators break down they just temporarily become stairs (as the Mitch Hedberg joke goes). But this one decided to glitch in a way that actively ruined the days of the people riding it. The escalator, located in Ningbo in China's Zhejiang Province, suddenly reversed, creating a deluge of falling human bodies and no one seems to know why. Five people received minor injuries. The takeaway here is just use the stairs -- not because it's healthier, but because stairs don't really have the option to malfunction.