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.