This was from last Halloween- each member had to wear a costume, and then say something sexy.
Bananman duo Osamu Shitara and Yūki Himura at first were questioning why she chose to dress as a kindergarten student,
and Asuka answered it was because she was the youngest member.
Then they asked her can you really do a sexy pose while dressed as a kindergarten student?
Her phrase was タマゴボーロ tamago boru .....Egg Ball? {Note: in the English subtitled version of this episode that Rust san posted,
the translation was 'Egg Cookie', but I still don't get it....}
I do not understand the joke (but apparently it was quite the unexpected things for her to say), and
everyone gave her credit for closing the gap between her costume and the sexy phrase/pose.....