The members of 'Running Man' as well as all the guests, started off the show by dancing with one another. At that moment, BADKIZ's song "Ear Attack" came on which triggered Joy to come into the center to do the "fake slap dance" that went viral in Korea.
As soon as she started, members of the show lined up get receive a "slap" from her, including Lee Kwang Soo. After happily dancing to the music and things have settled down, it was revealed the actor's phone broke because he stepped on it by accident without realizing it.
Check out the funny clip above!