"The aim was to break some norms, because that's the slogan for my YouTube channel, 'against the norms'," Fred Ligaard, who studies marketing in Santa Barbara, told The Local. "I believe that if you want to be true to yourself, then you can't live life as everyone expects from you."
In the video, Ligaard, who performs as 'Freddie Fairhair', is shown running naked down streets and across a park in Oslo, and then approaching groups of girls in public places."
He was eventually approached by a Norwegian policeman, after a security guard reported him. The policeman took down his details, but didn't charge him with anything.
"It's technically illegal to be naked in public, but they realised that it's a funny video so they used good judgement." Ligaard says. "We thought it was game over. We went home when they came."
The stunt has won Ligaard his moment of fame in Norway. He was asked to appear on Wednesday on the main afternoon chat of TV2, and the prank has featured on US blogs such as the Huffington Post, Daily Dot, and the right-wing Bro Bible which described him as "a really creepy weirdo from Norway".
But Ligaard protested that he had done nothing to offend people.
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"I don't' believe I'm harassing people," he said. "I think it's impossible to harass someone if the intention is to spread joy.