No, I believe it refers to "Nantettate Idol" (roughly, "Well, of course she's an idol!"), one of the major hits for singer/actress Kyoko "Kyon-Kyon" Koizumi.
What should you do, you ask...About what?According to this book...Wh... what should I do?Eh!?Pro Wrestling for GirlsAnd be pretty!Ah right, songs.Episode 168: Kochiya☆SanaeFrom the Artist's Pixiv page*flap*Just BecauseLady Suwako......Idol Wrestlers have to be able to sing, among other things!You mean we're not?Wait, songs?Wait, Sanae, before you even consider this...Would we really be classified as Idol Wrestlers?I'm not very confident about it...What on earth else is there?What should I do?If I knew about this before hand, I would've practiced in karaoke alone!