I haven't really thought about special kinks, but just as for Galt, that slight tremble across a pair of buttocks when a woman is walking and the heel touched the ground...

If it's also combined with a slight roll of the hips, I'm trapped. That soft tremble is what I connect with how a bottom dances when swatted, so I can find just observing that walk tremendously exciting. I have realized that I go back to describing that jiggle in far too many of my stories here on site, but it's because I enjoy it so much, even when it's only my imagination, as I write.