This image reminds me of that song, "That's What Friends Are For."

I mean that's really friendship when you lend a hand in nailing your friend's face to a harp! Oh and note the guy's grip on that edge of the harp, he's probably leaving impressions in the wood!

Some searching on Youtube turns up some videos of the Scissors Dance (where they do in fact dance holding scissors, surprise), but none of the self- and assisted mutilation stuff.