The boy group guested on the October 11 episode, where they played games and competed for a prize. Mark and Jackson got into a heated match. As the two members wrestled, Jackson accidentally ripped Mark's jeans.
The game came to a halt with Jung Hyung Don calling for a timeout while Mark stood there cluelessly. While his members laughed, Mark soon found out that his pants have ripped and revealed his hot red underwear.
Ultimately, Jackson and Mark played rock, paper, scissors to pick the winner. Watch the funny scene in the clip above.