On the February 10th installment of the variety show, the 'Knowing Brothers' cast celebrated Lee Soo Geun's birthday with a cake and gifts. Seo Jang Hoon stated, "The day this airs is Lee Soo Geun's birthday. I told everyone that things would change if I became class president. I prepared a birthday party for Lee Soo Geun. He'll be the first to receive such an event."

Heechul then added, "I love and respect Lee Soo Geun hyung. Lee Soo Geun farts a lot during filming. I want him to be careful, so I bought him adult diapers," and Min Kyung Hoon responded, "Aren't those for dogs?"

The Super Junior member explained, "I should've bought diapers, but I accidentally bought something else," and Lee Soo Geun joked, "I need them for my dog."