What is your favorite fetish/sex thing and your least favorite fetish/sex thing?

What is your favorite fetish/sex thing and your least favorite fetish/sex thing? I will give my example first so you know what I mean: My favorite is to hear the slapping sounds during anal, especially seeing the ass as it happens. Least favorite thing is sounding. Haven't done it, NEVER WILL and I just can't see how that's enjoyable in the slightest.This isn't meant to be a kink-shaming post, but be as honest as you want! GO!