The January 10 episode of “Running Man” featured the members of the show playing a game called “The House,” a traditional Korean game reinterpreted “Running Man”-style. yoojaesuk

During the show, the members were given a role: was Haha‘s servant, and was ‘s servant.

Lee Kwang Soo immediately started flattering Kim Jong Kook, referring to him dutifully as “president.”Lee Kwang Soo immediately promised him that “[he] would become the President’s dog.” Upon hearing this, Haha remarked to Yoo Jae Suk, “Aren’t those sorts of words good?”

An annoyed Yoo Jae Suk responded, “Are we not seeing each other on Saturday?” The other members assume Yoo Jae Suk is talking about “Infinite Challenge,” as both he and Haha are cast members on that variety show.

However, as “Running Man” and “Infinite Challenge” are produced by different broadcasting companies, it is an unspoken rule to not mention one show in the other. When the members of “Running Man” pointed this out, Yoo Jae Suk was quick to defend himself, saying “Please don’t misunderstand, our families are having dinner together that day.”

Source (1)