Joy is getting annoyed that Kat keeps following her wanting to changer her and diaper her. She finally vents to Kat how hard it is having go wear diapers 24/7 and that Kat just doesn't understand. Kat agrees to let Joy diaper her if that'll make her feel better, cause it really can't be that bad, right? But she can't just wear it, she has to wet it too!
So she wets her diaper, not realizing the Joy is wetting her diaper too but not because she wants to, but because she just does whenever she has to without realizing it herself. They both discuss who's going to get changed first but Kat lays down for her first diaper change. Just as they're finishing up though, Kat's dad comes home early and catches them. Kat is so embarrassed she runs out the door, diaper still hanging out from under her dress and leaves Joy to deal with her dad's punishement.