n. Using hoaxes or mischievous acts as part of a marketing campaign.
2017
A cabbie takes two supposedly unsuspecting riders on a stunt-filled journey of terror. …In reality, of course, this is nothing more than prankvertising.
2016
Costs are relatively low and the chances of going viral high with 'prankvertising,' says CBC Ad Guy.
2014
In the age of viral content, advertisers are going to increasingly dramatic lengths to make sure their commercials get views, likes and shares. "Prankvertising," ads that (purportedly) subject unsuspecting folks to wild practical jokes, are the most recent fad that marketers have ridden to viral success. …The devil baby is hardly the first prankvertisement to go viral.
2010 (earliest)
Great Heineken Prank-vertising: Soccer Match vs. Classical Concert http://tinyurl.com/ybvay5g