Thud.

So, I'm sitting at the computer, combining my morning internet fix with my Amoryn snuggle time. She's wiggling a little bit, which is standard these days, when she leans forward and slowly & deliberately whomps her head on the desk.
.
It made quite a good "thud", a little bit like the noise an underripe watermelon makes when you knock on it.
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I think it means she'd like to go & do something else now, Momma. So we're off to the tub and yet another botched version of "Rubber Ducky".