Yoo Jae Suk had viewers laughing after they witnessed a slightly embarrassing situation for the "nation's MC".

As mentioned previously, singer IU appeared on the September 20th broadcast of KBS2's 'Happy Together 3' to showcase her late night snack. However, in the process, she unintentionally humiliated Yoo Jae Suk and brought laughs.

When IU's dish was chosen as the 8th menu item for the show, Yoo Jae Suk went to congratulate her with a high five. However, unfortunately for him, IU happened to bow down at the exact moment, completely unaware of the MC's raised hands. With his timing slightly off, Yoo Jae Suk tried to quickly pull himself out of the embarrassing situation by reaching over and high fiving fellow MC�Park Myung Soo, causing laughter to break out.

Other guests this night besides IU included Noh Sa Yeon, Park Gun Hyung and Kikwang.

Source: NEWSEN via Nate