Ida Riedel Palmer, 23, was left disappointed when what was advertised as a free "body jam" dance CD with her breakfast cereal directed her to a hardcore porn website.
"I chose the brand of cereal because of the free CD. I was at first disappointed but then worried that maybe I had a virus on my computer. I called my boyfriend to check if he had been using my computer, but he told me he hadn't," Ida Riedel Palmer told The Local on Wednesday.
The young woman from Ume? in northern Sweden bought the packet of Nestl? Fitness cereal at the weekend and was left shaken by the nature of the porn to which she was exposed.
"It was not soft porn. It was definitely what I would categorize as unpleasant porn - not that I know much about it," she explained.
Palmer tested the offending CD in two more computers to make sure that the problem was not in anyway connected to her computer and the same thing occurred.
However the CD did contain the material that was advertised; it just came with an introduction that the unsuspecting Ida Riedel Palmer had not anticipated.
"When I put the CD in again the dance training came up. Without the porn."
"But as the problem was clearly not with my computer, it was with the CD, I felt that Nestl? should be informed and I called them."
Nestl? have been in touch and have assured her that they will get to the bottom of the mystery of how Palmer's corn flakes became porn flakes.
Ida Riedel Palmer told The Local that despite her experience she is willing to give the brand another chance.
"No I haven't changed cereal. But I have bought another packet," she said.