OH, my ing COW!!! 

I've just saw this because a friend shared it on a blog, and I was like O.O!!!!! OH MY ING COW!!!

at first I thought it was a fanfic, but then I saw this and... OH MY ING COW!!! 

the whole video killed me, but what finished me was the end, when Hyunseung jumps to Woonie's arms 

http://www.youtube.com/watch?feature=player_embedded&v=mF3VMMWQA7c