Yoo Jae Suk apologized to Lee Seung Gi on the latest episode of 'Running Man'.

Kim Jong Kook and Yoo Jae Suk had just run away from a horde of middle-aged ahjummas, who were blocking their path towards their destination and a hint for their final mission.

As the two members were resting after their escape, Lee Seung Gi showed up with enthusiasm, which was quickly tempered by the expressions on their faces. "Is there something big ahead?" he pried, but the two members didn't explain further, simply saying, "We've met on Sunday variety for the first time in a while, but I'm so sorry for making you work this hard."

Leaving him to face the mission alone, Yoo Jae Suk and Kim Jong Kook hurried off to their next destination. "What do we do with him? I feel so sorry for him," Yoo Jae Suk muttered to his partner after they had left earsight. "But he's pretty strong..."

After escaping from the ahjumma horde himself, Lee Seung Gi soon understood their warnings. "They didn't warn me for no reason." he realized.

However, he soon picked up on the cast members' pranks as Gary approached later, telling him, "There's a big prize awaiting you at the end of this road."

Check out the full episode below!