The popular MBC entertainment program "Infinite Challenge" member Yoo Jae Suk comically groaned when Jung Hyung Don took off his robe.

On the most recent episode of the MBC entertainment programs "Infinite Challenge," which aired on August 9, 2014, the Infinite Challenge members Noh Hong Chul, Ha Ha, Park Myung Soo, Yoo Jae Suk, Jung Joon Ha, and Jung Hyung Don challenged themselves to protect their blocks of ice from melting in hot, humid weather. They borrowed blocks of ice from the ice protector Kim Hak Chul for a mission, where they had to protect their blocks of ice from melting until a given time.

On this day's episode, Infinite Challenge member Yoo Jae Suk wanted to take off his robe, which was socked in sweat because of the hot weather. Jung Hyung Don helped him take off the robe. When he was about to take off Yoo Jae Suk's robe, he groaned, making Jung Hyung Don bewildered. Jung Hyung Don said, "This is PG 13," and Yoo Jae Suk said, "This is just a friend helping me take off my clothes." In related news, on the most recent episode of the MBC entertainment program "Infinite Challenge," Infinite Challenge members played a survival game protecting their own block of ice from melting in hot, humid weather.