One of these so-called uncle panelists, Kim Young Chul, was explaining the term "top-notch" and how it is occasionally used as a term to express that someone did a good job. When Kim Young Chul turned to IOI's Jeon So Mi, who is fluent in English to ask her whether this is correct, So Mi replied, "It is."
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The idol went on, "But it's not an expression that is used often. 'You did so well' or 'You are so good' is more common."
Kim Young Chul joked, "I use advanced English that foreigners don't use a lot. It's because So Mi is still in her teens that she uses those expressions instead." So Mi joked back, "Kim Young Chul is like an American oldster."