As you might know, the Korean language has both formal 'jondaemal' and informal 'banmal'. You might have also noticed that some idol members use formal language to their older members, while others use informal words.

Both Jo Kwon, the leader of 2AM and Eunkwang, the leader of BTOB talked about their opinions on what type of language maknaes should use to their leader.

MC Seo Ye Ji said to Eunkwang, "I heard that you're deeply moved when Sungjae, who's 5 years younger than you, uses jondaemal to you." 

Eunkwang explained in a bright tone, "At first, when we weren't close, he used jondaemal to me. Now we're so close that he usually says, 'Hyung, let's eat, go eat,' (informally). So when he uses jondaemal to me one in a while, I become really touched."

On the other hand, Jo Kwon explained that 2AM's dynamic was quite different. He explained, "I never let Jinwoon use banmal with me. If he does use banmal, I scold him a lot."

MC Kim Gu Ra agreed, "That's something you have to do."

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What are your thoughts on informal and formal language?