During the Q&A segment, Eunhyuk revealed to the cast of the show that he was once shocked when he visited Donghae's house because he was asked to sit down when urinating. Eunhyuk said, "It was really urgent for me so I hurried to the bathroom but Donghae called me back and asked if I was going to urinate. He then said, 'Sit down when you urinate!'. I thought he was joking at first but he said that really seriously."

As he shared his story, rest of the Super Junior members, as well as members of 'Knowing Brothers', got into a heated debate over which method they prefer between sitting down versus standing up which then led to the issue of cleanliness. 

Check out the clip above!