I went to a con a few months ago, the Elf Fantasy Fair. Suddenly some guys with camera's approached me and asked me to high-five in front of the camera. Okay, fine, did it, and continued my walk.
Appears to be for some well-known Dutch tv-show, 'klusjesmannen', who every week visit people with strange hobbies (like chess, scouting... and now cosplay xD), in which every episode people are high-fiving.
So... I was derping around on youtube, and noticed there was a new episode of the new season of Klusjesmannen, and in the comments I saw: '... *bla bla* I'm looking forward to the next episode, about the Fantasy Fair!' Then I remembered my awes