Lee Kwang Soo is usually known as the person causing the laughter in Running Man.
On one episode of Running Man, Lee Kwang Soo and Kim Jong Kook were challenged to not laugh during segments of the show. This all went downhill for Lee Kwang Soo once he saw Han Ki Bum.
Han Ki Bum and Lee Kwang Soo have been connected to each other many times due to their similar looks.
While Kim Jong Kook took on the challenge of trying not to laugh during the segment, Lee Kwang Soo pretty much gave up immediately. There was even an acting scene where Han Ki Bum was labeled as a student.
Once Lee Kwang Soo heard the word “student” he lost his mind.
It got progressively worse as Han Ki Bum imitated Lee Kwang Soo’s “mosquito dance” from the sitcom, High Kick Through The Roof.
Lee Kwang Soo went to the ground and couldn’t stand due to how much he was laughing.
Kim Jong Kook also left as fast he could in order to avoid seeing Han Ki Bum as much as possible.
Watch the full video below!