There this thing called a Silent Disco. It's not a new thing, nor can it only be found in Korea. But it is absolutely an amazing thing. So, it's basically like any other dance party or night club event, except there are no huge sound system setups, no decibels that that will leave you ringing for days. Instead, participants are given wireless headsets to which the DJs music is pumped through. You and all your friends are dancing and having an spectacular time to the same music, but to those without headphones, you are dancing in complete, awkward silence.
The fantastic bit about the music being contained to wireless headphones is that it is free of location dependencies, a Silent Disco can happen anywhere. My girlfriend and I attended a Silent Disco parade in Myeongdong (this was all her idea, thanks Yujin!), one of the businest tourist destinations in Seoul, packed with retail outlets and street vendors. Our Silent Disco brought a group of well over a hundred young dance fiends right through the middle of it, much to the bewilderment and amusement of the people around us. You'd get lost in the music and the ferver and completely forget you are the only ones that can hear the music. When your headphones accidentally fall off the veil is lifted and you see exactly why everyone in KFC has their phones out recording you all, it's hilarious.
Check out this video to see for yourself what onlookers saw.
The police look on in complete bewilderment without a single clue.
For added comedy, some people tied balloons to their headphones.
Myeongdong is somewhat famous for these comically tall ice cream cones. Mango/vanilla happiness was a bargain at 2,000 won/$1.84.
God was it fun.