Celebrity·Posted on Feb 22, 2017Katy Perry Exposed A Superfan During A Very Awkward On-Air Lie Detector TestLuckily for the fan, it was one big prank.by Christian ZamoraBuzzFeed StaffLinkFacebookPinterestTwitterMail Katy Perry stopped by Capital FM to promote her new wig and give a ~lie detector test~ to a superfan: View this video on YouTube youtube.com Things were off to good start between Katy and the superfan... 👍 ...until Katy asked if she liked her new hairstyle: LIARRRR. Tap to play GIF Tap to play GIF THEN, Katy asked if she didn't like any outfit that she's previously worn... ...AND THE LIE DETECTOR TEST DETERMINED THAT WAS ALSO A LIE!!!! Luckily for the poor fan, the whole thing was a prank and the lie-detector expert was faking all of her responses. The face of being fake-exposed: Tap to play GIF Tap to play GIF