The October 5 broadcast of MBC's 'Radio Star' featured Kim Joon Ho, Kim Dae Hee, Park Kyung, and Kisum with an episode on the topic of 'Cunning Geniuses.' 

On the show, Park Kyung talked about his life during elementary school when he was a part of 'Thrill Club.'

Park Kyung explained, "Zico was really popular in elementary school, but I was a nerd who just studied... I wanted to be a part of Zico's clique so I offered to fill in his attendance chart for him in return of being a part of the group. That group was called 'Thrill Club'." 

He also mentioned the messenger ID's, explaining, "The leader's ID was 'Thrill Tingly Kiss' and the assistant leader's ID was 'Thrill Sweet Kiss,'" making everyone on the show laugh. 

Park Kyung continued to share, saying, "Zico's ID was 'Thrill Crazy Kiss' and mine was 'Thrill Greasy Kiss.'" 

When asked what the leader of the 'Thrill Club' group is doing now, Park Kyung answered, "He is a Sunday school teacher."

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