The girls of SNSD and the guys from SHINee guest-starred on this week's episode of KBS's Imagine More (Imagine Plus), where SNSD member Sunny shared a cute story from her trainee days. She said:

"In order to help me memorize my fellow members' names, I gave them all nicknames based on my first impressions of them and wrote them down in my diary. I wrote, 'Tiffany is a girl who wanders around hurriedly, Taeyeon is like a little yellow chick, and Seohyun is a Park Jiyoon look-alike.'"

When Sunny was asked about her first impression of YoonA, she smiled and answered:

"I wrote 'YoonA looks like she has Injulmi (a type of Korean rice cake) under her eyes,'" which garnered lots of laughter from the audience.

Sunny also shared other things on the show, among them being her first impression of the members of SHINee - but you'll have to watch the episode for yourself to find out.