Ever wondered what some of your favorite idol stars go through during their trainee days? Well, fans were able to get a picture of what it must be like on tvN's 'Roller Coaster 3-I Am M'.

On the April 7th episode, Dal Shabet's Serri, Woohee, and Subin channeled their past as they brought laughs while playing the roles of trainees preparing for their debut.

The girls were rivals with another trainee Sang Eun (Park Sang Eun), who enters the agency after a street casting. The girls then face off in a dance competition to feature in Dal Shabet's music video and showed their hilarious covers of "Have Don't Have".

Dal Shabet's Ahyoung is also starring in the new drama 'Jang Ok Jung', which premiered on the 8th!