On July 4 on SBS "One Night of TV Entertainment," Yoon Do Hyun received a surprise personal interview.

During the live show, Girls' Generation Sooyoung suddenly exclaimed, "Yoon Do Hyun is looking at me like I'm crazy because I'm saying things that aren't on the script," and "I was curious about Yoon Do Hyun's obsession for sports so I decided to ask his fellow band members," and proceeded with the interview.

This surprise interview was planned by Sooyoung and the production crew.

With the help of the YB members, Sooyoung broke down Yoon Do Hyun's brain and stated, "Skateboarding takes up half of your brain. I can also see floss, wet towelettes and skin care."

Yoon Do Hyun responded, "It's a live show so you could have given me a clue about this." Sooyoung dismissed his comment and continued, "What's your history with skin care?"

Sooyoung remarked, "His skin's better than mine. It's better than most female celebrities," and continually asked about the specific tissue product he uses. In response, Yoon Do Hyun said, "My problem's not about your question but about whether you can do this on a live show." Sooyoung replied, "It was prepared by the production crew."

Yoon Do Hyun answered, "I only use that product. It's the best. It's always in my bag. Two things of floss and one pack of wet towelettes are always in my bag." To his YB members he said, "Just focus on music," which caused the studio to break out in laughter.