Kissing wasn't the only thing happening on Star King. This particular segment featured SNSD / Girls' Generation members Yoona and Jessica along with 2AM's Jo Kwon. The premise is pretty simple in that they have to show off a sad and happy expression. Both Yoona and Jessica did a great job at this but Jo Kwon was more of a hyper wild man, check out the hilarious clip below. http://www.youtube.com/watch?v=MtfGKo2cXus