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. 

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Ultimately, Jackson and Mark played rock, paper, scissors to pick the winner. Watch the funny scene in the clip above.