SEE ALSO: 'Knowing Brothers' reveals teaser for next week's episode featuring Apink

For next week's 'Knowing Brothers', A Pink marched into the Brothers' classroom with confidence to promote their new song! In the preview, the members expressed shock when Kang Ho Dong couldn't remember details about the group very well -- how he couldn't even remember that they were on 'Star King' with him. Furthermore, the girls made other funny attacks on the cast members, as they came fully prepared as "strong characters" (as suggested by the show's subtitles).

With Heechul, Hayoung joked, "Heechul's ideal type is 'the woman that he sees for the first time'!" Additionally, the girls took over the scene with an undefeatable funny dance challenge.

Make sure to tune into the episode with A Pink on June 30 at 9 PM KST!