This week's episode of Running Man had a hilarious surprise cameo by the cuties of K-pop group GOT7. While on their way to prison by train, the Running Man inmates made a stop at a platform where they had to complete a challenge while being guarded by GOT7, who were dressed in prison guard uniforms. What the inmates didn't know, was that there were clues about how to make a great escape hidden in their task. As each Running Man member discovers the clue and makes a desperate break, hilarity ensues while the GOT7 guards try to wrangle their prisoners in. Here are the top 3 funniest moments: 

1. When Lee Kwang Soo and Suk Jin make the first great escape, and the GOT7 boys give it their all to stop them: 

2. When JB, Ji Young, and Mark finally take down Kwang Soo...or do they?? 

3. When Song Ji Hyo, Gary, and Jae Suk make a break, and take down a lot of GOT7 guards along the way, but in the end...

What was your favorite part of this episode?

Watch the full episode here: