Giant poster ads are bad enough. But they're even worse when they suddenly come to life and attack you. As far as terrifying pranks go, this one is pretty high up there. And it just keeps getting better.
Created by Gröna Lund, a theme park in Stockholm, Sweden, the poster entices people passing by to scan the QR code to get a sneak peek at the park's upcoming haunted house attraction. But little do they know that the poster itself is possessed—by a very patient guy inside who's ready to scare the crap out of them. So while the ad might actually draw visitors to the theme park, it all but puts the nail in the coffin for the popularity of QR codes in Sweden. [YouTube via Taxi]