During MC GREE's recent guest appearance on the show, MC Lee Young Ja failed to recognize that MC GREE is the same person as Kim Dong Hyun (MC GREE's real name) and the son of Kim Gu Ra. She made everyone burst into laughter by saying, "The more I see him, the more I think MC GREE looks so much like Kim Gu Ra's son!" MC GREE was confused at the time and said, "Are you joking right now?"

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On the March 9 airing of 'Kim Chang Yeol's Old School', MC GREE talked about the incident and said, "At first, I thought she was just joking around." He continued, "I really appreciate her though because I didn't have any legendary clips throughout my 11 years on the broadcast. But now I have a legendary moment thanks to her." 

MC GREE shared more about the funny moment, and said, "The atmosphere was actually heavy at the set. Everyone was like, how can she not recognize Dong Hyun? But it turned out really funny on TV."