Context: Kei sees adult stuff and frequently replaces her words with more questionable words that sound similar. :3
Stuff by :iconporecomesis:

NOIRE: Hello, Kei.
KEI: Good moaning, Noire.
NOIRE: What?
KEI: Good morning, Noire.
NOIRE: ... Okay then.

Ever since that incident, Kei hasn't been quite herself and cannot help but accidentally let Freudian slips slip.
KEI: Uni, do you have the permission panties for the cruise liner?
UNI: What?
KEI: Permission papers, Uni, if you please.
UNI: ... Okay, then.

MINA: Kei, we're worried about you. Please talk to us.
KEI: I would ride not.
MINA: ...
KEI: Rather not. I would rather not! It is unimportant! Nothing is teasing—troubling me! I suckle gently, I swear! I penis to you, leave me a-moan!
MINA: O_O
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