Netizens were completely thrown off by LE SSERAFIM member Kim Chaewon's unexpected humor on the popular YouTube series, 'No Charim' hosted by Lee Young Ji. 

On this episode of 'No Charim', Kim Chaewon briefly took out her phone to check some information, then garnered attention for her cute phone case. 

One of the staff members outside of the frame pointed out, "Oh, it's Maenggu." (Maenggu is the Korean name of the character Bo-chan from the animated series 'Crayon Shin-chan', also known as 'Jjanggu' in Korea.)

Lee Young Ji also noticed and said, "Oh it's so cute. It's Maenggu." To this, Kim Chaewon remarked, "This is a new phone case I switched to recently." 

The idol then went on to explain, "Isn't it cute? You can also spin his snot bubble." 

Lee Young Ji loved the phone case, commenting once again, "Unnie, that is seriously so cute."

Kim Chaewon then added on, "There is also a Jjanggu (Shin-chan) version."

Lee Young Ji: "Really? What do you spin on the Jjanggu one?"

Kim Chaewon: "I'll get you the Jjanggu version as a gift."

Lee Young Ji: "Really?"

Kim Chaewon: "Yeah, the Jjanggu one."

Lee Young Ji: "We're gonna have couple cases?!?!"

Kim Chaewon: "We're gonna have couple cases!!"

So what does the Jjanggu one look like?

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You can watch the latest episode of Lee Young Ji's 'No Charim' featuring guest Kim Chaewon, below!