So my cat Lilith likes to jump on my lap when I'm on the computer and just lay there. I've noticed after she stops her purring and gets settled in and everything, if I talk to her, her tail will twitch. Very hard. I've heard that means they're annoyed - does it mean she gets annoyed that I'm talking to her? I'm not even talking very loudly when I do it, so... I just thought it was funny and I wonder if she just wants me to shut up or what.