What are some things Armpit learned about Kiara when he and Ginny went to her dressing room?

As they chat, Ginny reveals that Armpit was in a correctional facility, and the embarrassed Armpit explains why. Ginny asks whether she can tell Kaira his nickname and he says no, but then Kaira and Ginny whisper in each other's ears, and Armpit becomes uncomfortable. Band member Cotton comes in, and announces that El Genius has just fired him for letting Kaira sing the Joplin song. The outraged Kaira promises to hire him back as soon as she turns eighteen and can legally fire El Genius, and Cotton, after thanking her, leaves. Shortly afterwards, Armpit and Ginny leave, teasing each other about what Ginny and Kaira whispered, Ginny saying that all she told Kaira was that Armpit's nickname was a part of the body and Armpit asserting that whatever Ginny said it's all right, since he'll never see Kaira again. Ginny hints otherwise ...