If you werent aware, Kim Hyun Joong is the leader of Idol group SS501, and back in the day they used to do all of these silly, yet highly entertaining reality shows. In this particular clip, the guys are making fun of member Park Jungmin and KHJ finds it so funny that he just starts cracking up, and falling all over the place! Did you find yourself laughing at Kim Hyun Joon laughing? KrisE! @K_Kisses_KrisE