SEE ALSO: B1A4 confirm their comeback for end of September!

In the clip above, the cast of the show is seen having fun and goofing around until they realize another male group has appeared as guests. The tradition of coldly welcoming male guests is a running joke the show has been doing for some time now. Also, in the funny teaser video, the cast of the show try to guess what B1A4 stands for. Along with this, the members of the show teased CNU for his unfamiliar image in which resulted in him showing his musical skills to everyone.