New Yorkers Learn a Valuable 'Walking Dead' Lesson About Strolling Over Sewer Grates [Video]

"The Walking Dead" sends hungry zombies to infest a sidewalk grate and shock New Yorkers on hidden camera. (Credit: screengrab/AMC)

Everybody says they're ready for the zombie apocalypse, but if you walked by Union Square in New York City last Friday, your childlike screams may have convinced you otherwise. Naturally, the correct response to zombies grabbing at you as you pass over a sewer grate is to yelp like a little girl. (Ironically, there is a little girl in the video, but the zombies appear to have been too good-hearted to terrify her.)

[Related: 'Walking Dead' Superfan Pulls Zombie Prank on Norman Reedus: See Daryl Dixon Scream!]

Of course, it was a prank to promote the return of "The Walking Dead" this Sunday, which seems to be working out. The video has logged over half a million views in a day.

It's part of a larger trend called "prankvertising" in which some old-school "Candid Camera" scenarios involving ordinary people are used to make an otherwise dull commercial go viral. Since it's best if the victims freak out, it works best with horror properties like last year's "Carrie" remake.

Or the demon baby promoting "Devil's Due" (which racked up far more views than the movie ever did).

The practice isn't limited to scares. You know who else is a guaranteed freak-out? Kids taken to Toys "R" Us.

At least one person survived to tweet about the zombie grate prank.

#Zombies attacked me in Union Square, hand literally busted through the subway grates and grabbed it my supple ankle #WalkingDead #madeinny

— Titus Alexander (@Titusa92) January 31, 2014

And if you've ever wondered what zombies on a coffee break look like:

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It turns out, some New Yorkers actually are preparing for zombies correctly.

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See Conan O'Brien getting into the zombie spirit with the "TWD" cast:

 

"The Walking Dead" comes back from hiatus Sunday, Feb. 9 at 9 p.m. on AMC.