Yoo Jae Suk suffered an�embarrassing�moment in front of actress Lee Na Young.

On the July 28th broadcast of MBC's 'Infinity Challenge', Yoo Jae Suk began running for joy after greeting the show's guest Lee Na Young. However after taking just a few steps, he tripped and fell in front of her, causing Lee Na Young and the set to explode in laughter.

During the�episode,�it was also revealed that Lee Na Young and Yoo Jae Suk previously worked together in a sit-com, but do not have a close relationship with each other, leading the 'Infinity Challenge' cast to express their�disappointment�at Yoo Jae Suk.

Viewers who watched the show stated, "Korea's MC can even make us laugh with his body", "I almost spit out my water when Yoo Jae Suk fell", and "This is why I love 'Infinity Challenge'.

Source & Image: OSEN via Nate