Etta is pissed. Every night we put her to bed in the bathroom. We don't trust her on our bed cause she pees on it and if we left her just outside the bedroom, she would scratch on the door. So we shut her in the bathroom and to show her displeasure, she uses every possible variation of angry meow she can. It's kinda funny listening to her. It's like she thinks if she can just find the right tone of voice, the door will magically open. Or maybe she thinks it'll make us feel guilty and let her out. Unfortunately for her, our desire for uninterrupted sleep is much stronger than our feelings of guilt. Also my desire to not get peed on.
This is why I'm glad they don't stay kittens forever.